Commend -Xopt-in deprecation warning (due to bootstrap problems)

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

@@ -400,9 +400,10 @@ abstract class CommonCompilerArguments : CommonToolArguments() {
             }
             val optInDeprecatedFqNames = optInDeprecated?.toList().orEmpty()
             if (optInDeprecatedFqNames.isNotEmpty()) {
-                collector.report(
-                    WARNING, "'-Xopt-in' is deprecated and will be removed in a future release, please use -opt-in instead"
-                )
+                // TODO: uncomment this after -opt-in bootstrapping and Gradle script fixing
+//                collector.report(
+//                    WARNING, "'-Xopt-in' is deprecated and will be removed in a future release, please use -opt-in instead"
+//                )
             }
             put(AnalysisFlags.useExperimental, useExperimentalFqNames + optInDeprecatedFqNames + optIn?.toList().orEmpty())
             put(AnalysisFlags.expectActualLinker, expectActualLinker)

compiler/testData/cli/jvm/experimentalDeprecatedWarning.out

@@ -1,6 +1,5 @@
 warning: '-Xexperimental' is deprecated and will be removed in a future release
 warning: '-Xuse-experimental' is deprecated and will be removed in a future release, please use -opt-in instead
-warning: '-Xopt-in' is deprecated and will be removed in a future release, please use -opt-in instead
 warning: opt-in requirement marker org.test.Warning2 is deprecated. Warning2
 warning: opt-in requirement marker org.test.Warning1 is deprecated. Warning1
 OK

compiler/testData/cli/jvm/unrestrictedBuilderInference.out

@@ -1,4 +1,3 @@
-warning: '-Xopt-in' is deprecated and will be removed in a future release, please use -opt-in instead
 compiler/testData/cli/jvm/unrestrictedBuilderInference.kt:3:9: warning: variable 'x' is never used
     val x = buildMap {
         ^