Remove unused parameter from check_and_push_window_quals

... and find_window_run_conditions.

This seems to have been around and unused ever since the Run Condition
feature was added in 9d9c02ccd.  Let's remove it to clean things up a
bit.

Author: Matheus Alcantara <matheusssilv97@gmail.com>
Discussion: https://postgr.es/m/DD26NJ0Y34ZS.2ZOJPHSY12PFI@gmail.com

src/backend/optimizer/path/allpaths.c

@@ -2254,7 +2254,7 @@ set_dummy_rel_pathlist(RelOptInfo *rel)
  * return false.
  */
 static bool
-find_window_run_conditions(Query *subquery, RangeTblEntry *rte, Index rti,
+find_window_run_conditions(Query *subquery, RangeTblEntry *rte,
 						   AttrNumber attno, WindowFunc *wfunc, OpExpr *opexpr,
 						   bool wfunc_left, bool *keep_original,
 						   Bitmapset **run_cond_attrs)
@@ -2445,8 +2445,8 @@ find_window_run_conditions(Query *subquery, RangeTblEntry *rte, Index rti,
  * will use the runCondition to stop returning tuples.
  */
 static bool
-check_and_push_window_quals(Query *subquery, RangeTblEntry *rte, Index rti,
-							Node *clause, Bitmapset **run_cond_attrs)
+check_and_push_window_quals(Query *subquery, RangeTblEntry *rte, Node *clause,
+							Bitmapset **run_cond_attrs)
 {
 	OpExpr	   *opexpr = (OpExpr *) clause;
 	bool		keep_original = true;
@@ -2485,7 +2485,7 @@ check_and_push_window_quals(Query *subquery, RangeTblEntry *rte, Index rti,
 		TargetEntry *tle = list_nth(subquery->targetList, var1->varattno - 1);
 		WindowFunc *wfunc = (WindowFunc *) tle->expr;
 
-		if (find_window_run_conditions(subquery, rte, rti, tle->resno, wfunc,
+		if (find_window_run_conditions(subquery, rte, tle->resno, wfunc,
 									   opexpr, true, &keep_original,
 									   run_cond_attrs))
 			return keep_original;
@@ -2498,7 +2498,7 @@ check_and_push_window_quals(Query *subquery, RangeTblEntry *rte, Index rti,
 		TargetEntry *tle = list_nth(subquery->targetList, var2->varattno - 1);
 		WindowFunc *wfunc = (WindowFunc *) tle->expr;
 
-		if (find_window_run_conditions(subquery, rte, rti, tle->resno, wfunc,
+		if (find_window_run_conditions(subquery, rte, tle->resno, wfunc,
 									   opexpr, false, &keep_original,
 									   run_cond_attrs))
 			return keep_original;
@@ -2622,7 +2622,7 @@ set_subquery_pathlist(PlannerInfo *root, RelOptInfo *rel,
 					 * runCondition.
 					 */
 					if (!subquery->hasWindowFuncs ||
-						check_and_push_window_quals(subquery, rte, rti, clause,
+						check_and_push_window_quals(subquery, rte, clause,
 													&run_cond_attrs))
 					{
 						/*