remove import

cloud-fan · cloud-fan · commit 417930a632f9 · 2018-08-02T03:00:19.000+08:00
diff --git a/sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/v2/DataSourceV2Relation.scala b/sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/v2/DataSourceV2Relation.scala
@@ -17,8 +17,6 @@
 
 package org.apache.spark.sql.execution.datasources.v2
 
-import java.util.Optional
-
 import scala.collection.JavaConverters._
 
 import org.apache.spark.sql.AnalysisException
