LU-10497 tests: remove tests from sanity-dom

LU-10497 tests: remove tests from sanity-dom

sanity test 42a, 42b, and 42c are known to fail and are
not run during normal testing due to LU-6493 and LU-9693.
Thus, remove these sanity tests from running in sanity-dom.

Test-Parameters: trivial testlist=sanity-dom
Signed-off-by: James Nunez <james.a.nunez@intel.com>
Change-Id: I2c99f44bcae845fd5f9fb0a17bb09a2b4b254ec9
Reviewed-on: https://review.whamcloud.com/31004
Tested-by: Jenkins
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Jian Yu <jian.yu@intel.com>
Reviewed-by: Mike Pershin <mike.pershin@intel.com>