Restore explicit imports of Kotlin function types in Java

This is a follow-up to 738a84e259 and
d4965a4f3e. Optimize imports in all files
affected in those commits, drop temporary _.kt

core/util.runtime/src/kotlin/jvm/functions/_.kt

@@ -1,22 +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.jvm.functions
-
-/**
- * This is a hack to allow star import from the package [kotlin.jvm.functions] to allow to migrate functional types
- */
-public object _

core/util.runtime/src/org/jetbrains/kotlin/storage/LockBasedStorageManager.java

@@ -16,11 +16,9 @@
 
 package org.jetbrains.kotlin.storage;
 
-import kotlin.jvm.functions.*;
-import kotlin.*;
-import kotlin.jvm.functions.*;
-import kotlin.*;
 import kotlin.Unit;
+import kotlin.jvm.functions.Function0;
+import kotlin.jvm.functions.Function1;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 import org.jetbrains.kotlin.utils.UtilsPackage;