Add new line to end of file

sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/v2/jdbc/JDBCV1CompatibleRelation.scala

@@ -53,9 +53,5 @@ case class JDBCV1CompatibleRelation(
       pushedLimit, sortOrders, pushedOffset)
   }
 
-  /**
-   * Returns string representation of this relation
-   * Since relation string representation is visible to customer by explain command
-   */
   override def toString: String = "JDBC Relation"
-}
+}