LV 2.0: drop reporting FIR_COMPILED_CLASS and relevant stuff

#KT-62056 Fixed
Related to KT-59171, KT-61951

compiler/cli/src/org/jetbrains/kotlin/cli/common/fir/FirDiagnosticsCompilerResultsReporter.kt

@@ -29,8 +29,7 @@ object FirDiagnosticsCompilerResultsReporter {
             AnalyzerWithCompilerReport.reportSpecialErrors(
                 diagnosticsCollector.diagnostics.any { it.factory == FirErrors.INCOMPATIBLE_CLASS },
                 diagnosticsCollector.diagnostics.any { it.factory == FirErrors.PRE_RELEASE_CLASS },
-                hasUnstableClasses = false,     // TODO (KT-61598): report FIR_COMPILED_CLASS and IR_WITH_UNSTABLE_ABI_COMPILED_CLASS
-                hasFirUnstableClasses = false,  // TODO (KT-61598): report FIR_COMPILED_CLASS and IR_WITH_UNSTABLE_ABI_COMPILED_CLASS
+                hasUnstableClasses = false,     // TODO (KT-61598): report IR_WITH_UNSTABLE_ABI_COMPILED_CLASS
                 messageCollector,
             )
         }

compiler/cli/src/org/jetbrains/kotlin/cli/common/messages/AnalyzerWithCompilerReport.kt

@@ -185,7 +185,6 @@ class AnalyzerWithCompilerReport(
                     diagnostics.any { it.factory == Errors.INCOMPATIBLE_CLASS },
                     diagnostics.any { it.factory == Errors.PRE_RELEASE_CLASS },
                     diagnostics.any { it.factory == Errors.IR_WITH_UNSTABLE_ABI_COMPILED_CLASS },
-                    diagnostics.any { it.factory == Errors.FIR_COMPILED_CLASS },
                     messageCollector,
                 )
             }
@@ -195,7 +194,6 @@ class AnalyzerWithCompilerReport(
             hasIncompatibleClasses: Boolean,
             hasPrereleaseClasses: Boolean,
             hasUnstableClasses: Boolean,
-            hasFirUnstableClasses: Boolean,
             messageCollector: MessageCollector,
         ) {
             if (hasIncompatibleClasses) {
@@ -222,14 +220,6 @@ class AnalyzerWithCompilerReport(
                             "Remove them from the classpath or use '-Xallow-unstable-dependencies' to suppress errors"
                 )
             }
-
-            if (hasFirUnstableClasses) {
-                messageCollector.report(
-                    ERROR,
-                    "Classes compiled by the new Kotlin compiler frontend were found in dependencies. " +
-                            "Remove them from the classpath or use '-Xallow-unstable-dependencies' to suppress errors"
-                )
-            }
         }
 
         fun reportSyntaxErrors(file: PsiElement, reporter: DiagnosticMessageReporter): SyntaxErrorReport {