Drop unused LibrarySourceHacks

compiler/frontend/src/org/jetbrains/kotlin/resolve/LibrarySourceHacks.kt

@@ -1,37 +0,0 @@
-/*
- * Copyright 2010-2015 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.resolve
-
-import com.intellij.openapi.util.Key
-import org.jetbrains.kotlin.descriptors.CallableDescriptor
-import org.jetbrains.kotlin.descriptors.CallableMemberDescriptor
-import org.jetbrains.kotlin.descriptors.PackageFragmentDescriptor
-
-object LibrarySourceHacks {
-    val SKIP_TOP_LEVEL_MEMBERS: Key<Boolean> = Key.create<Boolean>("SKIP_TOP_LEVEL_MEMBERS") // used when analyzing library source
-
-    fun shouldSkip(member: CallableDescriptor): Boolean {
-        val original = member.original as? CallableMemberDescriptor ?: return false
-
-        if (original.containingDeclaration !is PackageFragmentDescriptor) return false
-
-        val declaration = DescriptorToSourceUtils.getSourceFromDescriptor(original) ?: return false
-
-        val file = declaration.containingFile
-        return file != null && (file.getUserData<Boolean>(SKIP_TOP_LEVEL_MEMBERS) ?: false)
-    }
-}

idea/idea-analysis/src/org/jetbrains/kotlin/idea/caches/resolve/KotlinResolveCache.kt

@@ -156,12 +156,6 @@ private object KotlinResolveDataProvider {
                 return AnalysisResult.success(analyzeExpressionCodeFragment(componentProvider, analyzableElement), module)
             }
 
-            val file = analyzableElement.containingKtFile
-            if (file.getModuleInfo() is LibrarySourceInfo) {
-                // Library sources: mark file to skip
-                file.putUserData(LibrarySourceHacks.SKIP_TOP_LEVEL_MEMBERS, true)
-            }
-
             val resolveSession = componentProvider.get<ResolveSession>()
             val trace = DelegatingBindingTrace(resolveSession.bindingContext, "Trace for resolution of " + analyzableElement)