Remove duplicate test case after syncing

the same patch from upstream

Own patch: dfd53de
Upstream patch: edbc723

src/test/regress/expected/gporca.out

@@ -14258,57 +14258,6 @@ SELECT gp_segment_id, * FROM result_tab;
 DROP TABLE IF EXISTS dist_tab_a;
 DROP TABLE IF EXISTS dist_tab_b;
 DROP TABLE IF EXISTS result_tab;
--- Test ORCA not falling back to Postgres planner during
--- SimplifySelectOnOuterJoin stage. Previously, we could get assertion error
--- trying to EberEvaluate() strict function with zero arguments.
--- Postgres planner will fold our function, because it has additional
--- eval_const_expressions() call for subplan. ORCA has only one call to
--- fold_constants() at the very beginning and doesn't perform folding later.
-CREATE TABLE join_null_rej1(i int);
-CREATE TABLE join_null_rej2(i int);
-INSERT INTO join_null_rej1(i) VALUES (1), (2), (3);
-INSERT INTO join_null_rej2 SELECT i FROM join_null_rej1;
-CREATE OR REPLACE FUNCTION join_null_rej_func() RETURNS int AS $$
-BEGIN
-    RETURN 5;
-END;
-$$ LANGUAGE plpgsql STABLE STRICT;
-EXPLAIN (COSTS OFF) SELECT (
-    SELECT count(*) cnt
-    FROM join_null_rej1 t1
-    LEFT JOIN join_null_rej2 t2 ON t1.i = t2.i
-    WHERE t2.i < join_null_rej_func()
-);
-                             QUERY PLAN                              
----------------------------------------------------------------------
- Result
-   InitPlan 1 (returns $0)  (slice2)
-     ->  Aggregate
-           ->  Gather Motion 3:1  (slice1; segments: 3)
-                 ->  Aggregate
-                       ->  Hash Join
-                             Hash Cond: (t1.i = t2.i)
-                             ->  Seq Scan on join_null_rej1 t1
-                                   Filter: (i < 5)
-                             ->  Hash
-                                   ->  Seq Scan on join_null_rej2 t2
-                                         Filter: (i < 5)
- Optimizer: Postgres query optimizer
-(13 rows)
-
--- Optional, but let's check we get same result for both, folded and
--- not folded now() frunction.
-SELECT (
-    SELECT count(*) cnt
-    FROM join_null_rej1 t1
-    LEFT JOIN join_null_rej2 t2 ON t1.i = t2.i
-    WHERE t2.i < join_null_rej_func()
-);
- cnt 
------
-   3
-(1 row)
-
 -- Test if orca produces bitmap scan on mixed partitions
 create table mixed_part( a int) distributed randomly
 partition by range (a)

src/test/regress/expected/gporca_optimizer.out

@@ -14520,59 +14520,6 @@ SELECT gp_segment_id, * FROM result_tab;
 DROP TABLE IF EXISTS dist_tab_a;
 DROP TABLE IF EXISTS dist_tab_b;
 DROP TABLE IF EXISTS result_tab;
--- Test ORCA not falling back to Postgres planner during
--- SimplifySelectOnOuterJoin stage. Previously, we could get assertion error
--- trying to EberEvaluate() strict function with zero arguments.
--- Postgres planner will fold our function, because it has additional
--- eval_const_expressions() call for subplan. ORCA has only one call to
--- fold_constants() at the very beginning and doesn't perform folding later.
-CREATE TABLE join_null_rej1(i int);
-CREATE TABLE join_null_rej2(i int);
-INSERT INTO join_null_rej1(i) VALUES (1), (2), (3);
-INSERT INTO join_null_rej2 SELECT i FROM join_null_rej1;
-CREATE OR REPLACE FUNCTION join_null_rej_func() RETURNS int AS $$
-BEGIN
-    RETURN 5;
-END;
-$$ LANGUAGE plpgsql STABLE STRICT;
-EXPLAIN (COSTS OFF) SELECT (
-    SELECT count(*) cnt
-    FROM join_null_rej1 t1
-    LEFT JOIN join_null_rej2 t2 ON t1.i = t2.i
-    WHERE t2.i < join_null_rej_func()
-);
-                                       QUERY PLAN                                       
-----------------------------------------------------------------------------------------
- Result
-   ->  Result
-         ->  Nested Loop Left Join
-               Join Filter: true
-               ->  Result
-               ->  Aggregate
-                     ->  Materialize
-                           ->  Gather Motion 3:1  (slice1; segments: 3)
-                                 ->  Hash Join
-                                       Hash Cond: (join_null_rej1.i = join_null_rej2.i)
-                                       ->  Seq Scan on join_null_rej1
-                                       ->  Hash
-                                             ->  Seq Scan on join_null_rej2
-                                                   Filter: (i < join_null_rej_func())
- Optimizer: Pivotal Optimizer (GPORCA)
-(15 rows)
-
--- Optional, but let's check we get same result for both, folded and
--- not folded now() frunction.
-SELECT (
-    SELECT count(*) cnt
-    FROM join_null_rej1 t1
-    LEFT JOIN join_null_rej2 t2 ON t1.i = t2.i
-    WHERE t2.i < join_null_rej_func()
-);
- cnt 
------
-   3
-(1 row)
-
 -- Test if orca produces bitmap scan on mixed partitions
 create table mixed_part( a int) distributed randomly
 partition by range (a)

src/test/regress/sql/gporca.sql

@@ -3213,39 +3213,6 @@ DROP TABLE IF EXISTS dist_tab_a;
 DROP TABLE IF EXISTS dist_tab_b;
 DROP TABLE IF EXISTS result_tab;
 
--- Test ORCA not falling back to Postgres planner during
--- SimplifySelectOnOuterJoin stage. Previously, we could get assertion error
--- trying to EberEvaluate() strict function with zero arguments.
--- Postgres planner will fold our function, because it has additional
--- eval_const_expressions() call for subplan. ORCA has only one call to
--- fold_constants() at the very beginning and doesn't perform folding later.
-CREATE TABLE join_null_rej1(i int);
-CREATE TABLE join_null_rej2(i int);
-
-INSERT INTO join_null_rej1(i) VALUES (1), (2), (3);
-INSERT INTO join_null_rej2 SELECT i FROM join_null_rej1;
-
-CREATE OR REPLACE FUNCTION join_null_rej_func() RETURNS int AS $$
-BEGIN
-    RETURN 5;
-END;
-$$ LANGUAGE plpgsql STABLE STRICT;
-
-EXPLAIN (COSTS OFF) SELECT (
-    SELECT count(*) cnt
-    FROM join_null_rej1 t1
-    LEFT JOIN join_null_rej2 t2 ON t1.i = t2.i
-    WHERE t2.i < join_null_rej_func()
-);
--- Optional, but let's check we get same result for both, folded and
--- not folded now() frunction.
-SELECT (
-    SELECT count(*) cnt
-    FROM join_null_rej1 t1
-    LEFT JOIN join_null_rej2 t2 ON t1.i = t2.i
-    WHERE t2.i < join_null_rej_func()
-);
-
 -- Test if orca produces bitmap scan on mixed partitions
 create table mixed_part( a int) distributed randomly
 partition by range (a)