KT-33515: Remove Kotlin sources generated by KAPT

When KAPT is unable to run incrementally make sure to
clean directory that contains generated Kotlin sources.
This location is specified using '-Akapt.kotlin.generated'
option.

plugins/kapt3/kapt3-compiler/src/org/jetbrains/kotlin/kapt3/Kapt3Extension.kt

@@ -66,8 +66,6 @@ import java.io.Writer
 import java.net.URLClassLoader
 import javax.annotation.processing.Processor
 
-private const val KAPT_KOTLIN_GENERATED_OPTION_NAME = "kapt.kotlin.generated"
-
 class ClasspathBasedKapt3Extension(
     options: KaptOptions,
     logger: MessageCollectorBackedKaptLogger,
@@ -209,17 +207,12 @@ abstract class AbstractKapt3Extension(
                 bindingTrace.bindingContext,
                 module,
                 listOf(options.sourcesOutputDir),
-                listOfNotNull(options.sourcesOutputDir, getKotlinGeneratedSourcesDirectory()),
+                listOfNotNull(options.sourcesOutputDir, options.getKotlinGeneratedSourcesDirectory()),
                 addToEnvironment = true
             )
         }
     }
 
-    private fun getKotlinGeneratedSourcesDirectory(): File? {
-        val value = options.processingOptions[KAPT_KOTLIN_GENERATED_OPTION_NAME] ?: return null
-        return File(value).takeIf { it.exists() }
-    }
-
     private fun runAnnotationProcessing(kaptContext: KaptContext, processors: LoadedProcessors) {
         if (!options.mode.runAnnotationProcessing) return