Remove more unused imports.

Author: rdblue

sql/hive/src/test/scala/org/apache/spark/sql/hive/execution/HiveSerDeSuite.scala

@@ -21,11 +21,10 @@ import java.net.URI
 
 import org.scalatest.BeforeAndAfterAll
 
-import org.apache.spark.sql.{AnalysisException, SaveMode, SparkSession}
+import org.apache.spark.sql.{AnalysisException, SparkSession}
 import org.apache.spark.sql.catalyst.catalog.CatalogTable
 import org.apache.spark.sql.catalyst.plans.PlanTest
 import org.apache.spark.sql.execution.command.{CreateTableCommand, DDLUtils}
-import org.apache.spark.sql.execution.datasources.CreateTable
 import org.apache.spark.sql.execution.metric.InputOutputMetricsHelper
 import org.apache.spark.sql.hive.test.TestHive
 import org.apache.spark.sql.internal.{HiveSerDe, SQLConf}