Move SyntheticMemberDescriptor.kt to core

This is a first part of unification SAM constructors for all platforms

compiler/resolution/src/org/jetbrains/kotlin/descriptors/synthetic/SyntheticMemberDescriptor.kt

@@ -1,31 +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.descriptors.synthetic
-
-import org.jetbrains.kotlin.descriptors.ClassDescriptor
-import org.jetbrains.kotlin.descriptors.DeclarationDescriptor
-import org.jetbrains.kotlin.descriptors.FunctionDescriptor
-
-interface SyntheticMemberDescriptor<out T : DeclarationDescriptor> {
-    val baseDescriptorForSynthetic: T
-}
-
-interface FunctionInterfaceConstructorDescriptor : SyntheticMemberDescriptor<ClassDescriptor>
-
-interface FunctionInterfaceAdapterDescriptor<out T : FunctionDescriptor> : SyntheticMemberDescriptor<T>
-
-interface FunctionInterfaceAdapterExtensionFunctionDescriptor : SyntheticMemberDescriptor<FunctionDescriptor>

compiler/resolution/src/org/jetbrains/kotlin/resolve/scopes/utils/ScopeUtils.kt

@@ -17,7 +17,6 @@
 package org.jetbrains.kotlin.resolve.scopes.utils
 
 import org.jetbrains.kotlin.descriptors.*
-import org.jetbrains.kotlin.descriptors.synthetic.SyntheticMemberDescriptor
 import org.jetbrains.kotlin.incremental.components.LookupLocation
 import org.jetbrains.kotlin.incremental.components.NoLookupLocation
 import org.jetbrains.kotlin.name.Name