remove dead code

core/src/main/java/org/elasticsearch/index/engine/FlushingRecoveryCounter.java

@@ -1,57 +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.index.engine;
-
-import org.elasticsearch.ElasticsearchException;
-import org.elasticsearch.common.logging.ESLogger;
-import org.elasticsearch.index.shard.IllegalIndexShardStateException;
-import org.elasticsearch.index.store.Store;
-
-/**
- * A special {@link RecoveryCounter} that flushes the engine when all
- * recoveries have completed
- */
-public final class FlushingRecoveryCounter extends RecoveryCounter {
-
-    private final Engine engine;
-    private final ESLogger logger;
-
-    FlushingRecoveryCounter(Engine engine, Store store, ESLogger logger) {
-        super(store);
-        this.engine = engine;
-        this.logger = logger;
-    }
-
-    @Override
-    int endRecovery() {
-        int left = super.endRecovery();
-        if (left == 0) {
-            try {
-                engine.flush();
-            } catch (IllegalIndexShardStateException|FlushNotAllowedEngineException e) {
-                // we are being closed, or in created state, ignore
-                // OR, we are not allowed to perform flush, ignore
-            } catch (Throwable e) {
-                logger.warn("failed to flush shard post recovery", e);
-            }
-        }
-        return left;
-    }
-}