spotless fix

Author: ywangd

server/src/main/java/org/elasticsearch/index/shard/IndexingStats.java

@@ -10,7 +10,6 @@
 package org.elasticsearch.index.shard;
 
 import org.elasticsearch.TransportVersion;
-import org.elasticsearch.TransportVersions;
 import org.elasticsearch.common.io.stream.StreamInput;
 import org.elasticsearch.common.io.stream.StreamOutput;
 import org.elasticsearch.common.io.stream.Writeable;