diff --git a/platform/util/src/com/intellij/util/io/LongInlineKeyDescriptor.java b/platform/util/src/com/intellij/util/io/LongInlineKeyDescriptor.java
deleted file mode 100644
index 78f1fdd02f78..000000000000
--- a/platform/util/src/com/intellij/util/io/LongInlineKeyDescriptor.java
+++ /dev/null
@@ -1,50 +0,0 @@
-/*
- * Copyright 2000-2014 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.util.io;
-
-import org.jetbrains.annotations.NotNull;
-
-import java.io.DataInput;
-import java.io.DataOutput;
-import java.io.IOException;
-
-/**
- * @author lambdamix
- */
-public class LongInlineKeyDescriptor implements KeyDescriptor<Long> {
-  public static LongInlineKeyDescriptor INSTANCE = new LongInlineKeyDescriptor();
-
-  @Override
-  public final int getHashCode(Long value) {
-    return value.hashCode();
-  }
-
-  @Override
-  public final boolean isEqual(Long val1, Long val2) {
-    return val1.longValue() == val2.longValue();
-  }
-
-  @Override
-  public final void save(@NotNull DataOutput out, Long value) throws IOException {
-    out.writeLong(value.longValue());
-  }
-
-  @Override
-  public final Long read(@NotNull DataInput in) throws IOException {
-    return in.readLong();
-  }
-
-}