Remove unused import.

Author: Bingqin Zhou

kcbq-connector/src/test/java/com/wepay/kafka/connect/bigquery/BigQuerySinkTaskTest.java

@@ -27,15 +27,13 @@
 import static org.mockito.Mockito.times;
 import static org.mockito.Mockito.verify;
 import static org.mockito.Mockito.when;
-import static org.mockito.Mockito.never;
 
 import com.google.cloud.bigquery.BigQuery;
 import com.google.cloud.bigquery.BigQueryError;
 import com.google.cloud.bigquery.BigQueryException;
 import com.google.cloud.bigquery.InsertAllRequest;
 import com.google.cloud.bigquery.InsertAllResponse;
 import com.google.cloud.bigquery.TableId;
-import com.google.cloud.bigquery.Table;
 import com.google.cloud.storage.Storage;
 
 import com.wepay.kafka.connect.bigquery.api.SchemaRetriever;