diff --git a/core/builtins/src/kotlin/reflect/_Deprecated.kt b/core/builtins/src/kotlin/reflect/_Deprecated.kt
deleted file mode 100644
index 52afa46fb95..00000000000
--- a/core/builtins/src/kotlin/reflect/_Deprecated.kt
+++ /dev/null
@@ -1,29 +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 kotlin.reflect
-
-@Deprecated("This class will be dropped after M13 because it was a part of an overly complex API. Use KFunction instead")
-public interface KTopLevelFunction<out R> : KFunction<R>
-
-@Deprecated("This class will be dropped after M13 because it was a part of an overly complex API. Use KFunction instead")
-public interface KTopLevelExtensionFunction<in E, out R>
-
-@Deprecated("This class will be dropped after M13 because it was a part of an overly complex API. Use KFunction instead")
-public interface KMemberFunction<in T, out R> : KFunction<R>
-
-@Deprecated("This class will be dropped after M13 because it was a part of an overly complex API. Use KFunction instead")
-public interface KLocalFunction<out R> : KFunction<R>
diff --git a/core/reflection.jvm/src/kotlin/reflect/jvm/internal/KFunctionImpl.kt b/core/reflection.jvm/src/kotlin/reflect/jvm/internal/KFunctionImpl.kt
index c6698c860d4..400b8e57b97 100644
--- a/core/reflection.jvm/src/kotlin/reflect/jvm/internal/KFunctionImpl.kt
+++ b/core/reflection.jvm/src/kotlin/reflect/jvm/internal/KFunctionImpl.kt
@@ -14,7 +14,6 @@
  * limitations under the License.
  */
 
-@file:Suppress("DEPRECATED_SYMBOL_WITH_MESSAGE")
 package kotlin.reflect.jvm.internal
 
 import org.jetbrains.kotlin.descriptors.FunctionDescriptor
@@ -24,7 +23,8 @@ import java.lang.reflect.Member
 import java.lang.reflect.Method
 import java.lang.reflect.Modifier
 import kotlin.jvm.internal.FunctionImpl
-import kotlin.reflect.*
+import kotlin.reflect.KFunction
+import kotlin.reflect.KotlinReflectionInternalError
 import kotlin.reflect.jvm.internal.JvmFunctionSignature.*
 
 internal open class KFunctionImpl protected constructor(
@@ -32,8 +32,7 @@ internal open class KFunctionImpl protected constructor(
         name: String,
         signature: String,
         descriptorInitialValue: FunctionDescriptor?
-) : KFunction<Any?>, KCallableImpl<Any?>, FunctionImpl(),
-        KLocalFunction<Any?>, KMemberFunction<Any, Any?>, KTopLevelExtensionFunction<Any?, Any?>, KTopLevelFunction<Any?> {
+) : KFunction<Any?>, KCallableImpl<Any?>, FunctionImpl() {
     constructor(container: KDeclarationContainerImpl, name: String, signature: String) : this(container, name, signature, null)
 
     constructor(container: KDeclarationContainerImpl, descriptor: FunctionDescriptor) : this(
diff --git a/core/runtime.jvm/src/kotlin/jvm/internal/FunctionReference.java b/core/runtime.jvm/src/kotlin/jvm/internal/FunctionReference.java
index d4f2759f06c..3351044913c 100644
--- a/core/runtime.jvm/src/kotlin/jvm/internal/FunctionReference.java
+++ b/core/runtime.jvm/src/kotlin/jvm/internal/FunctionReference.java
@@ -24,14 +24,7 @@ import java.lang.annotation.Annotation;
 import java.util.List;
 import java.util.Map;
 
-@SuppressWarnings("deprecation")
-public class FunctionReference
-        extends FunctionImpl
-        implements KFunction,
-                   KTopLevelFunction,
-                   KMemberFunction,
-                   KTopLevelExtensionFunction,
-                   KLocalFunction {
+public class FunctionReference extends FunctionImpl implements KFunction {
     private final int arity;
 
     public FunctionReference(int arity) {