remove unused from platform-impl

platform/platform-impl/src/com/intellij/ui/TreeToolTipHandler.java

@@ -1,26 +0,0 @@
-/*
- * Copyright 2000-2010 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 com.intellij.ui;
-
-import javax.swing.*;
-
-/**
- * @deprecated use {@link com.intellij.ui.treeStructure.Tree} instead
- */
-public class TreeToolTipHandler {
-  public static void install(JTree tree) {
-  }
-}