t9811: fix misconversion of test

The previous commit started to insist TAG_F1_ONLY to be missing,
which was not in the original.  Let's not to be overly eager in the
conversion.

Signed-off-by: Junio C Hamano <[email protected]>

Author: gitster

t/t9811-git-p4-label-import.sh

@@ -97,7 +97,6 @@ test_expect_success 'two labels on the same changelist' '
 
 		git show-ref --verify refs/tags/TAG_F1_1 &&
 		git show-ref --verify refs/tags/TAG_F1_2 &&
-		test_must_fail git show-ref --verify refs/tags/TAG_F1_ONLY &&
 
 		cd main &&