Drop CommonCompilerArguments.optInDeprecated

On the way to KT-22956

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

@@ -75,8 +75,7 @@ abstract class CommonCompilerArguments : CommonToolArguments() {
 
     @Argument(
         value = "-opt-in",
-        // Uncomment after deletion of optInDeprecated
-        // deprecatedName = "-Xopt-in",
+        deprecatedName = "-Xopt-in",
         valueDescription = "<fq.name>",
         description = "Enable usages of API that requires opt-in with an opt-in requirement marker with the given fully qualified name"
     )
@@ -166,14 +165,6 @@ abstract class CommonCompilerArguments : CommonToolArguments() {
     )
     var useExperimental: Array<String>? by FreezableVar(null)
 
-    // NB: we have to keep this flag for some time due to bootstrapping problems
-    @Argument(
-        value = "-Xopt-in",
-        valueDescription = "<fq.name>",
-        description = "Enable usages of API that requires opt-in with an opt-in requirement marker with the given fully qualified name"
-    )
-    var optInDeprecated: Array<String>? by FreezableVar(null)
-
     @Argument(
         value = "-Xproper-ieee754-comparisons",
         description = "Generate proper IEEE 754 comparisons in all cases if values are statically known to be of primitive numeric types"
@@ -410,6 +401,7 @@ abstract class CommonCompilerArguments : CommonToolArguments() {
     @Argument(value = "-Xrender-internal-diagnostic-names", description = "Render internal names of warnings and errors")
     var renderInternalDiagnosticNames: Boolean by FreezableVar(false)
 
+    @OptIn(IDEAPluginsCompatibilityAPI::class)
     open fun configureAnalysisFlags(collector: MessageCollector, languageVersion: LanguageVersion): MutableMap<AnalysisFlag<*>, Any> {
         return HashMap<AnalysisFlag<*>, Any>().apply {
             put(AnalysisFlags.skipMetadataVersionCheck, skipMetadataVersionCheck)
@@ -421,13 +413,7 @@ abstract class CommonCompilerArguments : CommonToolArguments() {
                     WARNING, "'-Xuse-experimental' is deprecated and will be removed in a future release, please use -opt-in instead"
                 )
             }
-            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"
-                )
-            }
-            put(AnalysisFlags.optIn, useExperimentalFqNames + optInDeprecatedFqNames + optIn?.toList().orEmpty())
+            put(AnalysisFlags.optIn, useExperimentalFqNames + optIn?.toList().orEmpty())
             put(AnalysisFlags.expectActualLinker, expectActualLinker)
             put(AnalysisFlags.explicitApiVersion, apiVersion != null)
             put(AnalysisFlags.allowResultReturnType, allowResultReturnType)