[minor] IR: clean unnecessary ObsoleteDescriptorBasedAPI opt-ins

compiler/ir/backend.js/src/org/jetbrains/kotlin/ir/backend/js/JsIntrinsics.kt

@@ -6,11 +6,10 @@
 package org.jetbrains.kotlin.ir.backend.js
 
 import org.jetbrains.kotlin.builtins.PrimitiveType
-import org.jetbrains.kotlin.ir.ObsoleteDescriptorBasedAPI
+import org.jetbrains.kotlin.ir.IrBuiltIns
 import org.jetbrains.kotlin.ir.declarations.IrFunction
 import org.jetbrains.kotlin.ir.declarations.IrProperty
 import org.jetbrains.kotlin.ir.declarations.IrSimpleFunction
-import org.jetbrains.kotlin.ir.descriptors.IrBuiltInsOverDescriptors
 import org.jetbrains.kotlin.ir.symbols.IrSimpleFunctionSymbol
 import org.jetbrains.kotlin.ir.types.isLong
 import org.jetbrains.kotlin.ir.util.constructors
@@ -22,8 +21,7 @@ import org.jetbrains.kotlin.psi2ir.findSingleFunction
 import org.jetbrains.kotlin.util.capitalizeDecapitalize.toLowerCaseAsciiOnly
 import java.util.*
 
-@OptIn(ObsoleteDescriptorBasedAPI::class)
-class JsIntrinsics(private val irBuiltIns: IrBuiltInsOverDescriptors, val context: JsIrBackendContext) {
+class JsIntrinsics(private val irBuiltIns: IrBuiltIns, val context: JsIrBackendContext) {
 
     // TODO: Should we drop operator intrinsics in favor of IrDynamicOperatorExpression?
 

compiler/ir/backend.js/src/org/jetbrains/kotlin/ir/backend/js/JsIrBackendContext.kt

@@ -25,7 +25,6 @@ import org.jetbrains.kotlin.ir.builders.declarations.addFunction
 import org.jetbrains.kotlin.ir.declarations.*
 import org.jetbrains.kotlin.ir.declarations.impl.IrExternalPackageFragmentImpl
 import org.jetbrains.kotlin.ir.declarations.impl.IrFileImpl
-import org.jetbrains.kotlin.ir.descriptors.IrBuiltInsOverDescriptors
 import org.jetbrains.kotlin.ir.expressions.IrCall
 import org.jetbrains.kotlin.ir.symbols.IrClassSymbol
 import org.jetbrains.kotlin.ir.symbols.IrClassifierSymbol
@@ -178,8 +177,7 @@ class JsIrBackendContext(
     private val coroutineIntrinsicsPackage = module.getPackage(COROUTINE_INTRINSICS_PACKAGE_FQNAME)
 
     val dynamicType: IrDynamicType = IrDynamicTypeImpl(null, emptyList(), Variance.INVARIANT)
-    @OptIn(ObsoleteDescriptorBasedAPI::class)
-    val intrinsics = JsIntrinsics(irBuiltIns as IrBuiltInsOverDescriptors, this)
+    val intrinsics = JsIntrinsics(irBuiltIns, this)
 
     override val sharedVariablesManager = JsSharedVariablesManager(this)
 

compiler/ir/serialization.common/src/org/jetbrains/kotlin/backend/common/serialization/IrModuleDeserializer.kt

@@ -8,7 +8,6 @@ package org.jetbrains.kotlin.backend.common.serialization
 import org.jetbrains.kotlin.backend.common.serialization.encodings.BinarySymbolData
 import org.jetbrains.kotlin.descriptors.ModuleDescriptor
 import org.jetbrains.kotlin.ir.IrBuiltIns
-import org.jetbrains.kotlin.ir.ObsoleteDescriptorBasedAPI
 import org.jetbrains.kotlin.ir.declarations.*
 import org.jetbrains.kotlin.ir.symbols.*
 import org.jetbrains.kotlin.ir.util.IdSignature
@@ -94,7 +93,6 @@ abstract class IrModuleDeserializer(val moduleDescriptor: ModuleDescriptor, val
 }
 
 // Used to resolve built in symbols like `kotlin.ir.internal.*` or `kotlin.FunctionN`
-@OptIn(ObsoleteDescriptorBasedAPI::class)
 class IrModuleDeserializerWithBuiltIns(
     private val builtIns: IrBuiltIns,
     private val delegate: IrModuleDeserializer

compiler/ir/serialization.common/src/org/jetbrains/kotlin/backend/common/serialization/KotlinIrLinker.kt

@@ -308,7 +308,6 @@ abstract class KotlinIrLinker(
         return deserializerForModule.moduleFragment
     }
 
-    @OptIn(ObsoleteDescriptorBasedAPI::class)
     private fun maybeWrapWithBuiltInAndInit(
         moduleDescriptor: ModuleDescriptor,
         moduleDeserializer: IrModuleDeserializer

compiler/ir/serialization.js/build.gradle.kts

@@ -15,11 +15,3 @@ dependencies {
 sourceSets {
     "main" { projectDefault() }
 }
-
-tasks {
-    val compileKotlin by existing(org.jetbrains.kotlin.gradle.tasks.KotlinCompile::class) {
-        kotlinOptions {
-            freeCompilerArgs += "-Xopt-in=org.jetbrains.kotlin.ir.ObsoleteDescriptorBasedAPI"
-        }
-    }
-}