diff --git a/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/internal/kapt/KaptWithKotlincTask.kt.as31 b/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/internal/kapt/KaptWithKotlincTask.kt.as31
deleted file mode 100644
index d48383a5a3d..00000000000
--- a/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/internal/kapt/KaptWithKotlincTask.kt.as31
+++ /dev/null
@@ -1,90 +0,0 @@
-/*
- * Copyright 2010-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license
- * that can be found in the license/LICENSE.txt file.
- */
-
-package org.jetbrains.kotlin.gradle.internal
-
-import com.intellij.openapi.util.SystemInfo
-import com.intellij.openapi.util.text.StringUtil
-import org.gradle.api.GradleException
-import org.gradle.api.file.FileCollection
-import org.gradle.api.tasks.Classpath
-import org.gradle.api.tasks.InputFiles
-import org.gradle.api.tasks.Internal
-import org.gradle.api.tasks.TaskAction
-import org.jetbrains.kotlin.cli.common.arguments.K2JVMCompilerArguments
-import org.jetbrains.kotlin.compilerRunner.GradleCompilerEnvironment
-import org.jetbrains.kotlin.compilerRunner.GradleCompilerRunner
-import org.jetbrains.kotlin.gradle.logging.GradleKotlinLogger
-import org.jetbrains.kotlin.compilerRunner.OutputItemsCollectorImpl
-import org.jetbrains.kotlin.gradle.plugin.PLUGIN_CLASSPATH_CONFIGURATION_NAME
-import org.jetbrains.kotlin.gradle.tasks.CompilerPluginOptions
-import org.jetbrains.kotlin.gradle.logging.GradlePrintingMessageCollector
-import org.jetbrains.kotlin.gradle.tasks.localStateDirectories
-import org.jetbrains.kotlin.gradle.utils.toSortedPathsArray
-
-open class KaptWithKotlincTask : KaptTask(), CompilerArgumentAwareWithInput<K2JVMCompilerArguments> {
-    @get:Internal
-    internal val pluginOptions = CompilerPluginOptions()
-
-    @get:Classpath
-    @get:InputFiles
-    @Suppress("unused")
-    internal val kotlinTaskPluginClasspaths
-        get() = kotlinCompileTask.pluginClasspath
-
-    @get:Classpath
-    @get:InputFiles
-    val pluginClasspath: FileCollection
-        get() = project.configurations.getByName(PLUGIN_CLASSPATH_CONFIGURATION_NAME)
-
-    override fun createCompilerArgs(): K2JVMCompilerArguments = K2JVMCompilerArguments()
-
-    override fun setupCompilerArgs(args: K2JVMCompilerArguments, defaultsOnly: Boolean) {
-        kotlinCompileTask.setupCompilerArgs(args)
-
-        args.pluginClasspaths = pluginClasspath.toSortedPathsArray()
-
-        val pluginOptionsWithKapt: CompilerPluginOptions = pluginOptions.withWrappedKaptOptions(withApClasspath = kaptClasspath)
-        args.pluginOptions = (pluginOptionsWithKapt.arguments + args.pluginOptions!!).toTypedArray()
-
-        args.verbose = project.hasProperty("kapt.verbose") && project.property("kapt.verbose").toString().toBoolean() == true
-    }
-
-    @TaskAction
-    fun compile() {
-        logger.debug("Running kapt annotation processing using the Kotlin compiler")
-        checkAnnotationProcessorClasspath()
-
-        val args = prepareCompilerArguments()
-
-        val messageCollector = GradleMessageCollector(GradleKotlinLogger(logger))
-        val outputItemCollector = OutputItemsCollectorImpl()
-        val environment = GradleCompilerEnvironment(
-            compilerClasspath, messageCollector, outputItemCollector,
-            localStateDirectories = localStateDirectories()
-        )
-        if (environment.toolsJar == null && !isAtLeastJava9) {
-            throw GradleException("Could not find tools.jar in system classpath, which is required for kapt to work")
-        }
-
-        val compilerRunner = GradleCompilerRunner(this)
-        compilerRunner.runJvmCompilerAsync(
-            sourcesToCompile = emptyList(),
-            commonSources = emptyList(),
-            javaSourceRoots = javaSourceRoots,
-            javaPackagePrefix = kotlinCompileTask.javaPackagePrefix,
-            args = args,
-            environment = environment
-        )
-    }
-
-    private val isAtLeastJava9: Boolean
-        get() = StringUtil.compareVersionNumbers(getJavaRuntimeVersion(), "9") >= 0
-
-    private fun getJavaRuntimeVersion(): String {
-        val rtVersion = System.getProperty("java.runtime.version")
-        return if (Character.isDigit(rtVersion[0])) rtVersion else System.getProperty("java.version")
-    }
-}
\ No newline at end of file