CVE-2021-20277 ldb: Remove tests from ldb_match_test that do not pass

CVE-2021-20277 ldb: Remove tests from ldb_match_test that do not pass

This reverts some of the backport of 33a95a1e75b85e9795c4490b78ead2162e2a1f47

This is done here rather than squashed in the cherry-pick of the expanded testsuite
because it allows this commit to be simply reverted for the backport of bug 14044
if this lands first, or to be dropped if bug 14044 lands first.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=14655

Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>