remove dead unused code

src/main/java/org/elasticsearch/common/io/BooleanStreamable.java

@@ -1,59 +0,0 @@
-/*
- * Licensed to Elasticsearch under one or more contributor
- * license agreements. See the NOTICE file distributed with
- * this work for additional information regarding copyright
- * ownership. Elasticsearch 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.elasticsearch.common.io;
-
-import org.elasticsearch.common.io.stream.StreamInput;
-import org.elasticsearch.common.io.stream.StreamOutput;
-import org.elasticsearch.common.io.stream.Streamable;
-
-import java.io.IOException;
-
-/**
- *
- */
-public class BooleanStreamable implements Streamable {
-
-    private boolean value;
-
-    public BooleanStreamable() {
-    }
-
-    public BooleanStreamable(boolean value) {
-        this.value = value;
-    }
-
-    public void set(boolean newValue) {
-        value = newValue;
-    }
-
-    public boolean get() {
-        return this.value;
-    }
-
-    @Override
-    public void readFrom(StreamInput in) throws IOException {
-        value = in.readBoolean();
-    }
-
-    @Override
-    public void writeTo(StreamOutput out) throws IOException {
-        out.writeBoolean(value);
-    }
-}