JVM_IR. Remove FileClassDescriptor, no longer used

compiler/backend/src/org/jetbrains/kotlin/codegen/OwnerKind.kt

@@ -5,7 +5,6 @@
 
 package org.jetbrains.kotlin.codegen
 
-import org.jetbrains.kotlin.codegen.descriptors.FileClassDescriptor
 import org.jetbrains.kotlin.descriptors.ClassDescriptor
 import org.jetbrains.kotlin.descriptors.DeclarationDescriptor
 import org.jetbrains.kotlin.descriptors.PackageFragmentDescriptor
@@ -18,7 +17,7 @@ enum class OwnerKind {
 
     companion object {
         fun getMemberOwnerKind(descriptor: DeclarationDescriptor): OwnerKind = when (descriptor) {
-            is FileClassDescriptor, is PackageFragmentDescriptor -> OwnerKind.PACKAGE
+            is PackageFragmentDescriptor -> OwnerKind.PACKAGE
             is ClassDescriptor -> OwnerKind.IMPLEMENTATION
             else -> throw AssertionError("Unexpected declaration container: $this")
         }

compiler/backend/src/org/jetbrains/kotlin/codegen/descriptors/FileClassDescriptor.kt

@@ -1,21 +0,0 @@
-/*
- * Copyright 2010-2017 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.codegen.descriptors
-
-import org.jetbrains.kotlin.descriptors.ClassDescriptor
-
-interface FileClassDescriptor : ClassDescriptor

compiler/ir/backend.jvm/src/org/jetbrains/kotlin/backend/jvm/descriptors/FileClassDescriptorImpl.kt

@@ -1,42 +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.backend.jvm.descriptors
-
-import org.jetbrains.kotlin.backend.common.descriptors.KnownClassDescriptor
-import org.jetbrains.kotlin.codegen.descriptors.FileClassDescriptor
-import org.jetbrains.kotlin.descriptors.*
-import org.jetbrains.kotlin.descriptors.annotations.Annotations
-import org.jetbrains.kotlin.name.Name
-import org.jetbrains.kotlin.types.KotlinType
-
-class FileClassDescriptorImpl(
-    name: Name,
-    containingDeclaration: PackageFragmentDescriptor,
-    supertypes: List<KotlinType>,
-    sourceElement: SourceElement,
-    annotations: Annotations
-) : FileClassDescriptor, KnownClassDescriptor(
-    name, containingDeclaration, sourceElement,
-    ClassKind.CLASS, Modality.FINAL, Visibilities.PUBLIC,
-    annotations
-) {
-    init {
-        initialize(emptyList(), supertypes)
-    }
-
-    override fun isExternal() = false
-}

compiler/ir/backend.jvm/src/org/jetbrains/kotlin/backend/jvm/lower/BridgeLowering.kt

@@ -22,7 +22,6 @@ import org.jetbrains.kotlin.codegen.FunctionCodegen.isMethodOfAny
 import org.jetbrains.kotlin.codegen.FunctionCodegen.isThereOverriddenInKotlinClass
 import org.jetbrains.kotlin.codegen.JvmCodegenUtil.getDirectMember
 import org.jetbrains.kotlin.codegen.OwnerKind
-import org.jetbrains.kotlin.codegen.descriptors.FileClassDescriptor
 import org.jetbrains.kotlin.codegen.isToArrayFromCollection
 import org.jetbrains.kotlin.codegen.state.KotlinTypeMapper
 import org.jetbrains.kotlin.config.JvmTarget

compiler/ir/backend.jvm/src/org/jetbrains/kotlin/backend/jvm/lower/ClassLowerWithContext.kt

@@ -17,7 +17,6 @@
 package org.jetbrains.kotlin.backend.jvm.lower
 
 import org.jetbrains.kotlin.backend.common.FileLoweringPass
-import org.jetbrains.kotlin.codegen.descriptors.FileClassDescriptor
 import org.jetbrains.kotlin.descriptors.ClassDescriptor
 import org.jetbrains.kotlin.ir.IrStatement
 import org.jetbrains.kotlin.ir.declarations.IrClass