diff --git a/modules/elasticsearch/src/main/java/org/apache/lucene/analysis/util/OpenStringBuilder.java b/modules/elasticsearch/src/main/java/org/apache/lucene/analysis/util/OpenStringBuilder.java
deleted file mode 100644
index 99eb3b42a7c..00000000000
--- a/modules/elasticsearch/src/main/java/org/apache/lucene/analysis/util/OpenStringBuilder.java
+++ /dev/null
@@ -1,146 +0,0 @@
-package org.apache.lucene.analysis.util;
-
-/**
- * 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.
- */
-
-/**
- * A StringBuilder that allows one to access the array.
- */
-// LUCENE MONITOR: Remove as of Lucene 3.3
-public class OpenStringBuilder implements Appendable, CharSequence {
-  protected char[] buf;
-  protected int len;
-
-  public OpenStringBuilder() {
-    this(32);
-  }
-
-  public OpenStringBuilder(int size) {
-    buf = new char[size];
-  }
-
-  public OpenStringBuilder(char[] arr, int len) {
-    set(arr, len);
-  }
-
-  public void setLength(int len) { this.len = len; }
-
-  public void set(char[] arr, int end) {
-    this.buf = arr;
-    this.len = end;
-  }
-
-  public char[] getArray() { return buf; }
-  public int size() { return len; }
-  public int length() { return len; }
-  public int capacity() { return buf.length; }
-
-  public Appendable append(CharSequence csq) {
-    return append(csq, 0, csq.length());
-  }
-
-  public Appendable append(CharSequence csq, int start, int end) {
-    reserve(end-start);
-    for (int i=start; i<end; i++) {
-      unsafeWrite(csq.charAt(i));
-    }
-    return this;
-  }
-
-  public Appendable append(char c) {
-    write(c);
-    return this;
-  }
-
-  public char charAt(int index) {
-    return buf[index];
-  }
-
-  public void setCharAt(int index, char ch) {
-    buf[index] = ch;    
-  }
-
-  public CharSequence subSequence(int start, int end) {
-    throw new UnsupportedOperationException(); // todo
-  }
-
-  public void unsafeWrite(char b) {
-    buf[len++] = b;
-  }
-
-  public void unsafeWrite(int b) { unsafeWrite((char)b); }
-
-  public void unsafeWrite(char b[], int off, int len) {
-    System.arraycopy(b, off, buf, this.len, len);
-    this.len += len;
-  }
-
-  protected void resize(int len) {
-    char newbuf[] = new char[Math.max(buf.length << 1, len)];
-    System.arraycopy(buf, 0, newbuf, 0, size());
-    buf = newbuf;
-  }
-
-  public void reserve(int num) {
-    if (len + num > buf.length) resize(len + num);
-  }
-
-  public void write(char b) {
-    if (len >= buf.length) {
-      resize(len +1);
-    }
-    unsafeWrite(b);
-  }
-
-  public void write(int b) { write((char)b); }
-
-  public final void write(char[] b) {
-    write(b,0,b.length);
-  }
-
-  public void write(char b[], int off, int len) {
-    reserve(len);
-    unsafeWrite(b, off, len);
-  }
-
-  public final void write(OpenStringBuilder arr) {
-    write(arr.buf, 0, len);
-  }
-
-  public void write(String s) {
-    reserve(s.length());
-    s.getChars(0,s.length(),buf, len);
-    len +=s.length();
-  }
-
-  public void flush() {
-  }
-
-  public final void reset() {
-    len =0;
-  }
-
-  public char[] toCharArray() {
-    char newbuf[] = new char[size()];
-    System.arraycopy(buf, 0, newbuf, 0, size());
-    return newbuf;
-  }
-
-  public String toString() {
-    return new String(buf, 0, size());
-  }
-}
\ No newline at end of file