diff --git a/sql/core/src/main/java/org/apache/spark/sql/execution/UnsafeKeyValueSorter.java b/sql/core/src/main/java/org/apache/spark/sql/execution/UnsafeKeyValueSorter.java
deleted file mode 100644
index 59c774da74ac..000000000000
--- a/sql/core/src/main/java/org/apache/spark/sql/execution/UnsafeKeyValueSorter.java
+++ /dev/null
@@ -1,30 +0,0 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements.  See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The ASF licenses this file to You 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.apache.spark.sql.execution;
-
-import java.io.IOException;
-
-import org.apache.spark.sql.catalyst.expressions.UnsafeRow;
-import org.apache.spark.unsafe.KVIterator;
-
-public abstract class UnsafeKeyValueSorter {
-
-  public abstract void insert(UnsafeRow key, UnsafeRow value);
-
-  public abstract KVIterator<UnsafeRow, UnsafeRow> sort() throws IOException;
-}