Remove dead code from the executor

The functions GetPartitionTargetlist() and UpdateGenericExprState()
are not called from anywhere so remove.

src/backend/executor/execUtils.c

@@ -824,100 +824,6 @@ ExecAssignProjectionInfo(PlanState *planstate,
 								inputDesc);
 }
 
-/*
- * Constructs a new targetlist list that maps to a tuple descriptor.
- */
-List *
-GetPartitionTargetlist(TupleDesc partDescr, List *targetlist)
-{
-	Assert(NIL != targetlist);
-	Assert(partDescr);
-
-	List *partitionTargetlist = NIL;
-
-	AttrMap *attrmap = NULL;
-
-	TupleDesc targetDescr = ExecTypeFromTL(targetlist, false);
-
-	map_part_attrs_from_targetdesc(targetDescr, partDescr, &attrmap);
-
-	ListCell *entry = NULL;
-	int pos = 1;
-	foreach(entry, targetlist)
-	{
-		TargetEntry *te = (TargetEntry *) lfirst(entry);
-
-		/* Obtain corresponding attribute number in the part (this will be the resno). */
-		int partAtt = (int)attrMap(attrmap, pos);
-
-		/* A system attribute should be added to the target list with its original
-		 * attribute number.
-		 */
-		if (te->resorigcol < 0)
-		{
-			/* te->resorigcol should be equivalent to ((Var *)te->expr)->varattno.
-			 * te->resorigcol is used for simplicity.
-			 */
-			Assert(((Var *)te->expr)->varattno == te->resorigcol);
-
-			/* Validate interval for system-defined attributes. */
-			Assert(te->resorigcol > FirstLowInvalidHeapAttributeNumber &&
-				te->resorigcol <= SelfItemPointerAttributeNumber);
-
-			partAtt = te->resorigcol;
-		}
-
-		TargetEntry *newTe = flatCopyTargetEntry(te);
-
-		/* Parts are not explicitly specified in the range table. Therefore, the original RTE index is kept. */
-		Index rteIdx = ((Var *)te->expr)->varno;
-		/* Variable expression required by the Target Entry. */
-		Var *var = makeVar(rteIdx,
-				partAtt,
-				targetDescr->attrs[pos-1]->atttypid,
-				targetDescr->attrs[pos-1]->atttypmod,
-				0 /* resjunk */);
-
-
-		/* Modify resno in the new TargetEntry */
-		newTe->resno = partAtt;
-		newTe->expr = (Expr *) var;
-
-		partitionTargetlist = lappend(partitionTargetlist, newTe);
-
-		pos++;
-	}
-
-	Assert(attrmap);
-	pfree(attrmap);
-	Assert(partitionTargetlist);
-
-	return partitionTargetlist;
-}
-
-/*
- * Replace all attribute numbers to the corresponding mapped value (resno)
- *  in GenericExprState list with the attribute numbers in the  target list.
- */
-void
-UpdateGenericExprState(List *teTargetlist, List *geTargetlist)
-{
-	Assert(list_length(teTargetlist) ==
-		list_length(geTargetlist));
-
-	ListCell   *ge = NULL;
-	ListCell   *te = NULL;
-
-	forboth(te, teTargetlist, ge, geTargetlist)
-	{
-		GenericExprState *gstate = (GenericExprState *)ge->data.ptr_value;
-		TargetEntry *tle = (TargetEntry *)te->data.ptr_value;
-
-		Var *variable = (Var *) gstate->arg->expr;
-		variable->varattno = tle->resno;
-	}
-}
-
 /* ----------------
  *		ExecFreeExprContext
  *

src/include/executor/executor.h

@@ -432,8 +432,6 @@ extern ExprContext *CreateStandaloneExprContext(void);
 extern void FreeExprContext(ExprContext *econtext);
 extern void ReScanExprContext(ExprContext *econtext);
 extern void ResetExprContext(ExprContext *econtext);
-extern List *GetPartitionTargetlist(TupleDesc partDescr, List *targetlist);
-extern void UpdateGenericExprState(List *teTargetlist, List *geTargetlist);
 
 extern ExprContext *MakePerTupleExprContext(EState *estate);