remove unnecessary test case

Author: BRupireddy2

src/test/regress/expected/misc_functions.out

@@ -345,14 +345,6 @@ SELECT has_function_privilege('regress_log_memory',
  t
 (1 row)
 
-SET ROLE regress_log_memory;
-SELECT pg_log_backend_memory_contexts(pg_backend_pid());
- pg_log_backend_memory_contexts 
---------------------------------
- t
-(1 row)
-
-RESET ROLE;
 REVOKE EXECUTE ON FUNCTION pg_log_backend_memory_contexts(integer)
   FROM regress_log_memory;
 DROP ROLE regress_log_memory;

src/test/regress/sql/misc_functions.sql

@@ -104,10 +104,6 @@ GRANT EXECUTE ON FUNCTION pg_log_backend_memory_contexts(integer)
 SELECT has_function_privilege('regress_log_memory',
   'pg_log_backend_memory_contexts(integer)', 'EXECUTE'); -- yes
 
-SET ROLE regress_log_memory;
-SELECT pg_log_backend_memory_contexts(pg_backend_pid());
-RESET ROLE;
-
 REVOKE EXECUTE ON FUNCTION pg_log_backend_memory_contexts(integer)
   FROM regress_log_memory;