Remove WorkersIT test.

Now all compilations are using workers and issues should be covered
by other tests.

^KT-46406 Fixed

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/kotlin/org/jetbrains/kotlin/gradle/WorkersIT.kt

@@ -1,71 +0,0 @@
-/*
- * Copyright 2010-2019 JetBrains s.r.o. and Kotlin Programming Language contributors.
- * 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
-
-import org.jetbrains.kotlin.gradle.plugin.KotlinJsCompilerType
-import org.junit.Test
-
-class WorkersIT : BaseGradleIT() {
-    @Test
-    fun testParallelTasks() {
-        parallelTasksImpl(
-            isParallel = true,
-            jsCompilerType = KotlinJsCompilerType.LEGACY
-        )
-    }
-
-    @Test
-    fun testParallelTasksJsIr() {
-        parallelTasksImpl(
-            isParallel = true,
-            jsCompilerType = KotlinJsCompilerType.IR
-        )
-    }
-
-    @Test
-    fun testNoParallelTasks() {
-        parallelTasksImpl(
-            isParallel = false,
-            jsCompilerType = KotlinJsCompilerType.LEGACY
-        )
-    }
-
-    @Test
-    fun testNoParallelTasksJsIr() {
-        parallelTasksImpl(
-            isParallel = false,
-            jsCompilerType = KotlinJsCompilerType.IR
-        )
-    }
-
-    private fun parallelTasksImpl(
-        isParallel: Boolean,
-        jsCompilerType: KotlinJsCompilerType
-    ) =
-        with(Project("new-mpp-parallel", GradleVersionRequired.FOR_MPP_SUPPORT)) {
-            val options = defaultBuildOptions().copy(
-                parallelTasksInProject = isParallel,
-                withDaemon = false,
-                jsCompilerType = jsCompilerType
-            )
-            val traceLoading = "-Dorg.jetbrains.kotlin.compilerRunner.GradleKotlinCompilerWork.trace.loading=true"
-            build("assemble", traceLoading, options = options) {
-                assertSuccessful()
-                val tasks = arrayOf(":compileKotlinMetadata", ":compileKotlinJvm", ":compileKotlinJs")
-                assertTasksSubmittedWork(*tasks)
-                val expectedKotlinOutputFiles = listOf(
-                    kotlinClassesDir(sourceSet = "metadata/main") + "common/A.kotlin_metadata",
-                    kotlinClassesDir(sourceSet = "jvm/main") + "common/A.class",
-                    kotlinClassesDir(sourceSet = "js/main") +
-                            if (jsCompilerType == KotlinJsCompilerType.IR) "default/manifest" else "new-mpp-parallel.js"
-                )
-                expectedKotlinOutputFiles.forEach { assertFileExists(it) }
-                assertSubstringCount("Loaded GradleKotlinCompilerWork", 1)
-                assertCompiledKotlinSources(project.relativize(project.allKotlinFiles))
-                assertNotContains("Falling back to sl4j logger")
-            }
-        }
-}

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/new-mpp-parallel/build.gradle

@@ -1,38 +0,0 @@
-buildscript {
-	repositories {
-        mavenLocal()
-        mavenCentral()
-	}
-	dependencies {
-        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
-	}
-}
-
-apply plugin: 'kotlin-multiplatform'
-
-repositories {
-    mavenLocal()
-    mavenCentral()
-}
-
-kotlin {
-    sourceSets {
-        commonMain {}
-        jvmMain {
-            dependencies {
-                implementation 'org.jetbrains.kotlin:kotlin-stdlib'
-            }
-        }
-        jsMain {
-            dependencies {
-                implementation 'org.jetbrains.kotlin:kotlin-stdlib-js'
-            }
-        }
-    }
-
-    targets {
-        fromPreset(presets.jvm, 'jvm')
-    }
-
-    js()
-}

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/new-mpp-parallel/src/commonMain/kotlin/A.kt

@@ -1,9 +0,0 @@
-/*
- * Copyright 2010-2018 JetBrains s.r.o. and Kotlin Programming Language contributors.
- * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
- */
-
-package common
-
-class A(val x: Int)
-

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/compilerRunner/GradleKotlinCompilerWork.kt

@@ -86,14 +86,6 @@ internal class GradleKotlinCompilerWork @Inject constructor(
     config: GradleKotlinCompilerWorkArguments
 ) : Runnable {
 
-    companion object {
-        init {
-            if (System.getProperty("org.jetbrains.kotlin.compilerRunner.GradleKotlinCompilerWork.trace.loading") == "true") {
-                println("Loaded GradleKotlinCompilerWork")
-            }
-        }
-    }
-
     private val projectRootFile = config.projectFiles.projectRootFile
     private val clientIsAliveFlagFile = config.projectFiles.clientIsAliveFlagFile
     private val sessionFlagFile = config.projectFiles.sessionFlagFile