Remove token deletion check in keyfromlabel test

This removes a leftover check which should've been removed in a prior
change (see #5244). The softhsm2 failures when attempting to delete the
token should be ignored.

bin/tests/system/keyfromlabel/tests_keyfromlabel.py

@@ -86,7 +86,6 @@ def token_init_and_cleanup():
             raise_on_exception=False,
         ).stdout.decode("utf-8")
         assert re.search("Found token (.*) with matching token label", output)
-        assert re.search("The token (.*) has been deleted", output)
 
 
 # pylint: disable-msg=too-many-locals