[CLI] Drop CommonCompilerArguments.coroutinesState

compiler/cli/cli-common/src/org/jetbrains/kotlin/cli/common/arguments/CommonCompilerArguments.kt

@@ -121,13 +121,6 @@ abstract class CommonCompilerArguments : CommonToolArguments() {
     )
     var intellijPluginRoot: String? by NullableStringFreezableVar(null)
 
-    @Argument(
-        value = "-Xcoroutines",
-        valueDescription = "{enable|warn|error}",
-        description = "Enable coroutines or report warnings or errors on declarations and use sites of 'suspend' modifier"
-    )
-    var coroutinesState: String? by NullableStringFreezableVar(DEFAULT)
-
     @Argument(
         value = "-Xnew-inference",
         description = "Enable new experimental generic type inference algorithm"
@@ -385,17 +378,6 @@ abstract class CommonCompilerArguments : CommonToolArguments() {
                 put(LanguageFeature.MultiPlatformProjects, LanguageFeature.State.ENABLED)
             }
 
-            when (coroutinesState) {
-                CommonCompilerArguments.ERROR -> put(LanguageFeature.Coroutines, LanguageFeature.State.ENABLED_WITH_ERROR)
-                CommonCompilerArguments.ENABLE -> put(LanguageFeature.Coroutines, LanguageFeature.State.ENABLED)
-                CommonCompilerArguments.WARN, CommonCompilerArguments.DEFAULT -> {
-                }
-                else -> {
-                    val message = "Invalid value of -Xcoroutines (should be: enable, warn or error): " + coroutinesState
-                    collector.report(CompilerMessageSeverity.ERROR, message, null)
-                }
-            }
-
             if (newInference) {
                 put(LanguageFeature.NewInference, LanguageFeature.State.ENABLED)
                 put(LanguageFeature.SamConversionPerArgument, LanguageFeature.State.ENABLED)
@@ -525,7 +507,6 @@ abstract class CommonCompilerArguments : CommonToolArguments() {
             configureLanguageFeatures(collector)
         )
 
-        checkCoroutines(languageVersionSettings, collector)
         checkIrSupport(languageVersionSettings, collector)
 
         return languageVersionSettings
@@ -596,17 +577,6 @@ abstract class CommonCompilerArguments : CommonToolArguments() {
         }
     }
 
-    private fun checkCoroutines(languageVersionSettings: LanguageVersionSettings, collector: MessageCollector) {
-        if (languageVersionSettings.supportsFeature(LanguageFeature.ReleaseCoroutines)) {
-            if (coroutinesState != DEFAULT) {
-                collector.report(
-                    CompilerMessageSeverity.STRONG_WARNING,
-                    "-Xcoroutines has no effect: coroutines are enabled anyway in 1.3 and beyond"
-                )
-            }
-        }
-    }
-
     protected open fun checkIrSupport(languageVersionSettings: LanguageVersionSettings, collector: MessageCollector) {
         // backend-specific
     }