Remove unneeded code in DataFrameWriter.insertInto.

Author: yhuai

sql/core/src/main/scala/org/apache/spark/sql/DataFrameWriter.scala

@@ -249,25 +249,12 @@ final class DataFrameWriter[T] private[sql](ds: Dataset[T]) {
       )
     }
 
-    val partitions = normalizedParCols.map(_.map(col => col -> Option.empty[String]).toMap)
-    val overwrite = mode == SaveMode.Overwrite
-
-    // A partitioned relation's schema can be different from the input logicalPlan, since
-    // partition columns are all moved after data columns. We Project to adjust the ordering.
-    // TODO: this belongs to the analyzer.
-    val input = normalizedParCols.map { parCols =>
-      val (inputPartCols, inputDataCols) = df.logicalPlan.output.partition { attr =>
-        parCols.contains(attr.name)
-      }
-      Project(inputDataCols ++ inputPartCols, df.logicalPlan)
-    }.getOrElse(df.logicalPlan)
-
     df.sparkSession.sessionState.executePlan(
       InsertIntoTable(
-        UnresolvedRelation(tableIdent),
-        partitions.getOrElse(Map.empty[String, Option[String]]),
-        input,
-        overwrite,
+        table = UnresolvedRelation(tableIdent),
+        partition = Map.empty[String, Option[String]],
+        child = df.logicalPlan,
+        overwrite = mode == SaveMode.Overwrite,
         ifNotExists = false)).toRdd
   }