Remove unused argument of ATAddForeignConstraint

Commit 0325d7a5 made this unused but forgot to remove it. Do so now.

Author: Amit Langote <amitlangote09@gmail.com>
Discussion: https://postgr.es/m/209c99fe-b9a2-94f4-cd68-a8304186a09e@lab.ntt.co.jp

src/backend/commands/tablecmds.c

@@ -477,7 +477,7 @@ static ObjectAddress ATAddCheckConstraint(List **wqueue,
 										  bool recurse, bool recursing, bool is_readd,
 										  LOCKMODE lockmode);
 static ObjectAddress ATAddForeignKeyConstraint(List **wqueue, AlteredTableInfo *tab,
-											   Relation rel, Constraint *fkconstraint, Oid parentConstr,
+											   Relation rel, Constraint *fkconstraint,
 											   bool recurse, bool recursing,
 											   LOCKMODE lockmode);
 static ObjectAddress addFkRecurseReferenced(List **wqueue, Constraint *fkconstraint,
@@ -8620,7 +8620,7 @@ ATExecAddConstraint(List **wqueue, AlteredTableInfo *tab, Relation rel,
 										 NIL);
 
 			address = ATAddForeignKeyConstraint(wqueue, tab, rel,
-												newConstraint, InvalidOid,
+												newConstraint,
 												recurse, false,
 												lockmode);
 			break;
@@ -8826,7 +8826,7 @@ ATAddCheckConstraint(List **wqueue, AlteredTableInfo *tab, Relation rel,
  */
 static ObjectAddress
 ATAddForeignKeyConstraint(List **wqueue, AlteredTableInfo *tab, Relation rel,
-						  Constraint *fkconstraint, Oid parentConstr,
+						  Constraint *fkconstraint,
 						  bool recurse, bool recursing, LOCKMODE lockmode)
 {
 	Relation	pkrel;