Revert "[Gradle, JVM] Validate JVM targets even if compiler isn't called"

This reverts commit aa52a60f

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/tasks/Tasks.kt

@@ -410,9 +410,6 @@ abstract class AbstractKotlinCompile<T : CommonCompilerArguments> : AbstractKotl
 
         logger.kotlinDebug { "All kotlin sources: ${allKotlinSources.pathsAsStringRelativeTo(projectDir)}" }
 
-        val args = prepareCompilerArguments()
-        validateCompilerArguments(args)
-
         if (!inputChanges.isIncremental && skipCondition()) {
             // Skip running only if non-incremental run. Otherwise, we may need to do some cleanup.
             logger.kotlinDebug { "No Kotlin files found, skipping Kotlin compiler task" }
@@ -420,6 +417,7 @@ abstract class AbstractKotlinCompile<T : CommonCompilerArguments> : AbstractKotl
         }
 
         sourceRoots.log(this.name, logger)
+        val args = prepareCompilerArguments()
         taskBuildDirectory.get().asFile.mkdirs()
         callCompilerAsync(
             args,
@@ -454,8 +452,6 @@ abstract class AbstractKotlinCompile<T : CommonCompilerArguments> : AbstractKotl
     @Internal
     internal abstract fun getSourceRoots(): SourceRoots
 
-    protected open fun validateCompilerArguments(args: T) = Unit
-
     /**
      * Compiler might be executed asynchronously. Do not do anything requiring end of compilation after this function is called.
      * @see [GradleKotlinCompilerWork]
@@ -735,10 +731,6 @@ abstract class KotlinCompile @Inject constructor(
 
     override fun getSourceRoots(): SourceRoots.ForJvm = jvmSourceRoots
 
-    override fun validateCompilerArguments(args: K2JVMCompilerArguments) {
-        validateKotlinAndJavaHasSameTargetCompatibility(args)
-    }
-
     override fun callCompilerAsync(
         args: K2JVMCompilerArguments,
         sourceRoots: SourceRoots,
@@ -747,6 +739,8 @@ abstract class KotlinCompile @Inject constructor(
     ) {
         sourceRoots as SourceRoots.ForJvm
 
+        validateKotlinAndJavaHasSameTargetCompatibility(args)
+
         val messageCollector = GradlePrintingMessageCollector(logger, args.allWarningsAsErrors)
         val outputItemCollector = OutputItemsCollectorImpl()
         val compilerRunner = compilerRunner.get()