pySim-shell_test: re-enable test_list_and_rm_notifThe problems with test_list_and_rm_notif (see also change idI7d0b6a998499d84f0eb4e24592ad43210ac54806) are now resolved, sowe can re-enable the testcase now.Closes: SYS#7094Change-Id: I95eb3b9c02a69653797851197e882ea9316805fc