fix style

Author: Davies Liu

sql/core/src/main/scala/org/apache/spark/sql/internal/SessionState.scala

@@ -24,7 +24,7 @@ import org.apache.spark.sql.catalyst.optimizer.Optimizer
 import org.apache.spark.sql.catalyst.rules.RuleExecutor
 import org.apache.spark.sql.execution._
 import org.apache.spark.sql.execution.datasources.{PreInsertCastAndRename, ResolveDataSource}
-import org.apache.spark.sql.execution.exchange.{ReuseExchange, EnsureRequirements}
+import org.apache.spark.sql.execution.exchange.{EnsureRequirements, ReuseExchange}
 import org.apache.spark.sql.util.ExecutionListenerManager
 
 

sql/core/src/test/scala/org/apache/spark/sql/execution/PlannerSuite.scala

@@ -18,14 +18,13 @@
 package org.apache.spark.sql.execution
 
 import org.apache.spark.rdd.RDD
-import org.apache.spark.sql.Row
+import org.apache.spark.sql.{execution, Row}
 import org.apache.spark.sql.catalyst.InternalRow
 import org.apache.spark.sql.catalyst.expressions.{Ascending, Attribute, Literal, SortOrder}
 import org.apache.spark.sql.catalyst.plans.logical.{LogicalPlan, Repartition}
 import org.apache.spark.sql.catalyst.plans.physical._
-import org.apache.spark.sql.execution
 import org.apache.spark.sql.execution.columnar.InMemoryRelation
-import org.apache.spark.sql.execution.exchange.{ReuseExchange, EnsureRequirements, ReusedExchange, ShuffleExchange}
+import org.apache.spark.sql.execution.exchange.{EnsureRequirements, ReusedExchange, ReuseExchange, ShuffleExchange}
 import org.apache.spark.sql.execution.joins.{BroadcastHashJoin, SortMergeJoin}
 import org.apache.spark.sql.functions._
 import org.apache.spark.sql.internal.SQLConf