fix

src/test/regress/expected/isolation_get_all_active_transactions.out

@@ -109,18 +109,12 @@ count
 
 step s5-kill:
 	SELECT pg_terminate_backend(pg_backend_pid) FROM selected_pid;
-	SELECT pg_sleep(1); -- sleep for a while to make sure that backend is terminated
 
 pg_terminate_backend
 ---------------------------------------------------------------------
 t
 (1 row)
 
-pg_sleep
----------------------------------------------------------------------
-
-(1 row)
-
 step s3-wait-backend-termination:
 	SET ROLE postgres;
 	DO $$

src/test/regress/spec/isolation_get_all_active_transactions.spec

@@ -142,7 +142,6 @@ session "s5"
 step "s5-kill"
 {
 	SELECT pg_terminate_backend(pg_backend_pid) FROM selected_pid;
-	SELECT pg_sleep(1); -- sleep for a while to make sure that backend is terminated
 }