Remove unused imports

src/main/java/org/elasticsearch/indices/recovery/RecoveriesCollection.java

@@ -27,11 +27,7 @@ import org.elasticsearch.index.shard.IndexShardClosedException;
 import org.elasticsearch.index.shard.ShardId;
 import org.elasticsearch.index.shard.service.IndexShard;
 import org.elasticsearch.index.shard.service.InternalIndexShard;
-import org.elasticsearch.index.store.Store;
 
-import java.io.IOException;
-import java.sql.Timestamp;
-import java.util.Map;
 import java.util.concurrent.ConcurrentMap;
 import java.util.concurrent.atomic.AtomicBoolean;