Remove IncDecOperatorsInExpectClass test

It is incorrect because has expect and actual in same module,
which results in ACTUAL_WITHOUT_EXPECT reported in FIR.
But there is already same test
`multiplatform/incDecOperatorsInExpectClass.kt`, so there is no need
to fix and maintain test `IncDecOperatorsInExpectClass`.

^KT-60075 Fixed

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

@@ -471,12 +471,6 @@ public class DiagnosticCompilerTestFE10TestdataTestGenerated extends AbstractDia
             runTest("compiler/testData/diagnostics/tests/IncDec.kt");
         }
 
-        @Test
-        @TestMetadata("IncDecOperatorsInExpectClass.kt")
-        public void testIncDecOperatorsInExpectClass() throws Exception {
-            runTest("compiler/testData/diagnostics/tests/IncDecOperatorsInExpectClass.kt");
-        }
-
         @Test
         @TestMetadata("IncorrectCharacterLiterals.kt")
         public void testIncorrectCharacterLiterals() throws Exception {

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

@@ -471,12 +471,6 @@ public class LLFirPreresolvedReversedDiagnosticCompilerFE10TestDataTestGenerated
             runTest("compiler/testData/diagnostics/tests/IncDec.kt");
         }
 
-        @Test
-        @TestMetadata("IncDecOperatorsInExpectClass.kt")
-        public void testIncDecOperatorsInExpectClass() throws Exception {
-            runTest("compiler/testData/diagnostics/tests/IncDecOperatorsInExpectClass.kt");
-        }
-
         @Test
         @TestMetadata("IncorrectCharacterLiterals.kt")
         public void testIncorrectCharacterLiterals() throws Exception {

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

@@ -471,12 +471,6 @@ public class FirLightTreeOldFrontendDiagnosticsTestGenerated extends AbstractFir
             runTest("compiler/testData/diagnostics/tests/IncDec.kt");
         }
 
-        @Test
-        @TestMetadata("IncDecOperatorsInExpectClass.kt")
-        public void testIncDecOperatorsInExpectClass() throws Exception {
-            runTest("compiler/testData/diagnostics/tests/IncDecOperatorsInExpectClass.kt");
-        }
-
         @Test
         @TestMetadata("IncorrectCharacterLiterals.kt")
         public void testIncorrectCharacterLiterals() throws Exception {

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

@@ -471,12 +471,6 @@ public class FirPsiOldFrontendDiagnosticsTestGenerated extends AbstractFirPsiDia
             runTest("compiler/testData/diagnostics/tests/IncDec.kt");
         }
 
-        @Test
-        @TestMetadata("IncDecOperatorsInExpectClass.kt")
-        public void testIncDecOperatorsInExpectClass() throws Exception {
-            runTest("compiler/testData/diagnostics/tests/IncDecOperatorsInExpectClass.kt");
-        }
-
         @Test
         @TestMetadata("IncorrectCharacterLiterals.kt")
         public void testIncorrectCharacterLiterals() throws Exception {

compiler/testData/diagnostics/tests/IncDecOperatorsInExpectClass.fir.kt

@@ -1,13 +0,0 @@
-// In FIR, declaring the same `expect` and `actual` classes in one compiler module is not possible (see KT-55177). Hence the `.fir.kt` test
-// expects a diagnostic here. The multi-module test corresponding to this test is called: `multiplatform/incDecOperatorsInExpectClass.kt`.
-
-// !LANGUAGE: +MultiPlatformProjects
-// SKIP_TXT
-// Issue: KT-49714
-
-expect class Counter {
-    operator fun inc(): Counter
-    operator fun dec(): Counter
-}
-
-actual typealias <!ACTUAL_WITHOUT_EXPECT!>Counter<!> = Int

compiler/testData/diagnostics/tests/IncDecOperatorsInExpectClass.kt

@@ -1,13 +0,0 @@
-// In FIR, declaring the same `expect` and `actual` classes in one compiler module is not possible (see KT-55177). Hence the `.fir.kt` test
-// expects a diagnostic here. The multi-module test corresponding to this test is called: `multiplatform/incDecOperatorsInExpectClass.kt`.
-
-// !LANGUAGE: +MultiPlatformProjects
-// SKIP_TXT
-// Issue: KT-49714
-
-expect <!EXPECT_AND_ACTUAL_IN_THE_SAME_MODULE!>class Counter<!> {
-    operator fun inc(): Counter
-    operator fun dec(): Counter
-}
-
-actual typealias <!EXPECT_AND_ACTUAL_IN_THE_SAME_MODULE!>Counter<!> = Int

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

@@ -471,12 +471,6 @@ public class DiagnosticTestGenerated extends AbstractDiagnosticTest {
             runTest("compiler/testData/diagnostics/tests/IncDec.kt");
         }
 
-        @Test
-        @TestMetadata("IncDecOperatorsInExpectClass.kt")
-        public void testIncDecOperatorsInExpectClass() throws Exception {
-            runTest("compiler/testData/diagnostics/tests/IncDecOperatorsInExpectClass.kt");
-        }
-
         @Test
         @TestMetadata("IncorrectCharacterLiterals.kt")
         public void testIncorrectCharacterLiterals() throws Exception {