LU-9452 tests: remove sanityn test_29 from ALWAYS_EXCEPT

LU-9452 tests: remove sanityn test_29 from ALWAYS_EXCEPT

There is no longer a sanityn.sh test_29() so it shouldn't be
listed in ALWAYS_EXCEPT.

Test-Parameters: trivial testlist=sanityn
Signed-off-by: Andreas Dilger <andreas.dilger@intel.com>
Change-Id: Ia8112e20cbd3203b69e85e586e2400551b94de81
Reviewed-on: https://review.whamcloud.com/30646
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Saurabh Tandan <saurabh.tandan@intel.com>
Reviewed-by: James Nunez <james.a.nunez@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>