Tests: minor, remove obsolete diagnostic tests

- `require.kt` was added to check JVM accidental override diagnostic
  when using the "traits with required classes" feature, which was
  removed a long time ago.
- `withErrorTypes.kt` was testing conflicting JVM declarations error (a
  backend diagnostic) in presence of error types -- not very useful
  scenario because the backend is not run when there's a frontend error.

analysis/low-level-api-fir/tests/org/jetbrains/kotlin/analysis/low/level/api/fir/diagnostic/compiler/based/DiagnosticCompilerTestFE10TestdataTestGenerated.java

@@ -11959,12 +11959,6 @@ public class DiagnosticCompilerTestFE10TestdataTestGenerated extends AbstractDia
           runTest("compiler/testData/diagnostics/tests/duplicateJvmSignature/accidentalOverrides/privateClassFunctionOverriddenByProperty.kt");
         }
 
-        @Test
-        @TestMetadata("require.kt")
-        public void testRequire() {
-          runTest("compiler/testData/diagnostics/tests/duplicateJvmSignature/accidentalOverrides/require.kt");
-        }
-
         @Test
         @TestMetadata("traitFunctionOverriddenByProperty.kt")
         public void testTraitFunctionOverriddenByProperty() {
@@ -12268,12 +12262,6 @@ public class DiagnosticCompilerTestFE10TestdataTestGenerated extends AbstractDia
         public void testTrait() {
           runTest("compiler/testData/diagnostics/tests/duplicateJvmSignature/functionAndProperty/trait.kt");
         }
-
-        @Test
-        @TestMetadata("withErrorTypes.kt")
-        public void testWithErrorTypes() {
-          runTest("compiler/testData/diagnostics/tests/duplicateJvmSignature/functionAndProperty/withErrorTypes.kt");
-        }
       }
 
       @Nested

analysis/low-level-api-fir/tests/org/jetbrains/kotlin/analysis/low/level/api/fir/diagnostic/compiler/based/LLFirPreresolvedReversedDiagnosticCompilerFE10TestDataTestGenerated.java

@@ -11959,12 +11959,6 @@ public class LLFirPreresolvedReversedDiagnosticCompilerFE10TestDataTestGenerated
           runTest("compiler/testData/diagnostics/tests/duplicateJvmSignature/accidentalOverrides/privateClassFunctionOverriddenByProperty.kt");
         }
 
-        @Test
-        @TestMetadata("require.kt")
-        public void testRequire() {
-          runTest("compiler/testData/diagnostics/tests/duplicateJvmSignature/accidentalOverrides/require.kt");
-        }
-
         @Test
         @TestMetadata("traitFunctionOverriddenByProperty.kt")
         public void testTraitFunctionOverriddenByProperty() {
@@ -12268,12 +12262,6 @@ public class LLFirPreresolvedReversedDiagnosticCompilerFE10TestDataTestGenerated
         public void testTrait() {
           runTest("compiler/testData/diagnostics/tests/duplicateJvmSignature/functionAndProperty/trait.kt");
         }
-
-        @Test
-        @TestMetadata("withErrorTypes.kt")
-        public void testWithErrorTypes() {
-          runTest("compiler/testData/diagnostics/tests/duplicateJvmSignature/functionAndProperty/withErrorTypes.kt");
-        }
       }
 
       @Nested

compiler/fir/analysis-tests/tests-gen/org/jetbrains/kotlin/test/runners/FirLightTreeOldFrontendDiagnosticsTestGenerated.java

@@ -11953,12 +11953,6 @@ public class FirLightTreeOldFrontendDiagnosticsTestGenerated extends AbstractFir
           runTest("compiler/testData/diagnostics/tests/duplicateJvmSignature/accidentalOverrides/privateClassFunctionOverriddenByProperty.kt");
         }
 
-        @Test
-        @TestMetadata("require.kt")
-        public void testRequire() {
-          runTest("compiler/testData/diagnostics/tests/duplicateJvmSignature/accidentalOverrides/require.kt");
-        }
-
         @Test
         @TestMetadata("traitFunctionOverriddenByProperty.kt")
         public void testTraitFunctionOverriddenByProperty() {
@@ -12262,12 +12256,6 @@ public class FirLightTreeOldFrontendDiagnosticsTestGenerated extends AbstractFir
         public void testTrait() {
           runTest("compiler/testData/diagnostics/tests/duplicateJvmSignature/functionAndProperty/trait.kt");
         }
-
-        @Test
-        @TestMetadata("withErrorTypes.kt")
-        public void testWithErrorTypes() {
-          runTest("compiler/testData/diagnostics/tests/duplicateJvmSignature/functionAndProperty/withErrorTypes.kt");
-        }
       }
 
       @Nested

compiler/fir/analysis-tests/tests-gen/org/jetbrains/kotlin/test/runners/FirPsiOldFrontendDiagnosticsTestGenerated.java

@@ -11959,12 +11959,6 @@ public class FirPsiOldFrontendDiagnosticsTestGenerated extends AbstractFirPsiDia
           runTest("compiler/testData/diagnostics/tests/duplicateJvmSignature/accidentalOverrides/privateClassFunctionOverriddenByProperty.kt");
         }
 
-        @Test
-        @TestMetadata("require.kt")
-        public void testRequire() {
-          runTest("compiler/testData/diagnostics/tests/duplicateJvmSignature/accidentalOverrides/require.kt");
-        }
-
         @Test
         @TestMetadata("traitFunctionOverriddenByProperty.kt")
         public void testTraitFunctionOverriddenByProperty() {
@@ -12268,12 +12262,6 @@ public class FirPsiOldFrontendDiagnosticsTestGenerated extends AbstractFirPsiDia
         public void testTrait() {
           runTest("compiler/testData/diagnostics/tests/duplicateJvmSignature/functionAndProperty/trait.kt");
         }
-
-        @Test
-        @TestMetadata("withErrorTypes.kt")
-        public void testWithErrorTypes() {
-          runTest("compiler/testData/diagnostics/tests/duplicateJvmSignature/functionAndProperty/withErrorTypes.kt");
-        }
       }
 
       @Nested

compiler/testData/diagnostics/tests/duplicateJvmSignature/accidentalOverrides/require.fir.kt

@@ -1,7 +0,0 @@
-open class C {
-    val x = 1
-}
-
-interface Tr : <!INTERFACE_WITH_SUPERCLASS!>C<!> {
-    fun getX() = 1
-}

compiler/testData/diagnostics/tests/duplicateJvmSignature/accidentalOverrides/require.kt

@@ -1,7 +0,0 @@
-open class C {
-    val x = 1
-}
-
-interface Tr : <!INTERFACE_WITH_SUPERCLASS!>C<!> {
-    <!ACCIDENTAL_OVERRIDE!>fun getX()<!> = 1
-}

compiler/testData/diagnostics/tests/duplicateJvmSignature/accidentalOverrides/require.txt

@@ -1,17 +0,0 @@
-package
-
-public open class C {
-    public constructor C()
-    public final val x: kotlin.Int = 1
-    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
-    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
-    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
-}
-
-public interface Tr : C {
-    public final override /*1*/ /*fake_override*/ val x: kotlin.Int
-    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
-    public open fun getX(): kotlin.Int
-    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
-    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
-}

compiler/testData/diagnostics/tests/duplicateJvmSignature/functionAndProperty/withErrorTypes.fir.kt

@@ -1,4 +0,0 @@
-interface T {
-    val x: <!UNRESOLVED_REFERENCE!>ErrorType<!>
-    fun getX(): <!UNRESOLVED_REFERENCE!>ErrorType1<!>
-}

compiler/testData/diagnostics/tests/duplicateJvmSignature/functionAndProperty/withErrorTypes.kt

@@ -1,4 +0,0 @@
-interface T {
-    <!CONFLICTING_JVM_DECLARATIONS!>val x: <!UNRESOLVED_REFERENCE!>ErrorType<!><!>
-    <!CONFLICTING_JVM_DECLARATIONS!>fun getX(): <!UNRESOLVED_REFERENCE!>ErrorType1<!><!>
-}

compiler/testData/diagnostics/tests/duplicateJvmSignature/functionAndProperty/withErrorTypes.txt

@@ -1,9 +0,0 @@
-package
-
-public interface T {
-    public abstract val x: [Error type: Unresolved type for ErrorType]
-    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
-    public abstract fun getX(): [Error type: Unresolved type for ErrorType1]
-    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
-    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
-}

compiler/tests-common-new/tests-gen/org/jetbrains/kotlin/test/runners/DiagnosticTestGenerated.java

@@ -11959,12 +11959,6 @@ public class DiagnosticTestGenerated extends AbstractDiagnosticTest {
           runTest("compiler/testData/diagnostics/tests/duplicateJvmSignature/accidentalOverrides/privateClassFunctionOverriddenByProperty.kt");
         }
 
-        @Test
-        @TestMetadata("require.kt")
-        public void testRequire() {
-          runTest("compiler/testData/diagnostics/tests/duplicateJvmSignature/accidentalOverrides/require.kt");
-        }
-
         @Test
         @TestMetadata("traitFunctionOverriddenByProperty.kt")
         public void testTraitFunctionOverriddenByProperty() {
@@ -12268,12 +12262,6 @@ public class DiagnosticTestGenerated extends AbstractDiagnosticTest {
         public void testTrait() {
           runTest("compiler/testData/diagnostics/tests/duplicateJvmSignature/functionAndProperty/trait.kt");
         }
-
-        @Test
-        @TestMetadata("withErrorTypes.kt")
-        public void testWithErrorTypes() {
-          runTest("compiler/testData/diagnostics/tests/duplicateJvmSignature/functionAndProperty/withErrorTypes.kt");
-        }
       }
 
       @Nested