[FE] Drop coroutinesState from build configurations plugins

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

@@ -1,52 +0,0 @@
-/*
- * Copyright 2010-2016 JetBrains s.r.o.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package org.jetbrains.kotlin.gradle
-
-import org.junit.Test
-import java.io.File
-
-class CoroutinesIT : BaseGradleIT() {
-    @Test
-    fun testCoroutinesJvmDefault() {
-        jvmProject.doTest("default", null)
-    }
-
-    @Test
-    fun testCoroutinesJsDefault() {
-        jsProject.doTest("default", null)
-    }
-
-    // todo: replace with project that actually uses coroutines after their syntax is finalized
-    private val jvmProject: Project
-        get() = Project("kotlinProject")
-
-    private val jsProject: Project
-        get() = Project("kotlin2JsProject")
-
-    private fun Project.doTest(coroutineSupport: String, propertyFileName: String?) {
-        if (propertyFileName != null) {
-            setupWorkingDir()
-            val propertyFile = File(projectDir, propertyFileName)
-            val coroutinesProperty = "kotlin.coroutines=$coroutineSupport"
-            propertyFile.writeText(coroutinesProperty)
-        }
-
-        build("build") {
-            assertContains("args.coroutinesState=$coroutineSupport")
-        }
-    }
-}

libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/KotlinCompileMojoBase.java

@@ -441,10 +441,6 @@ public abstract class KotlinCompileMojoBase<A extends CommonCompilerArguments> e
         arguments.setApiVersion(apiVersion);
         arguments.setMultiPlatform(multiPlatform);
 
-        if (experimentalCoroutines != null) {
-            arguments.setCoroutinesState(experimentalCoroutines);
-        }
-
         configureSpecificCompilerArguments(arguments, sourceRoots);
 
         try {