LU-14817 build: __xa_set_mark is not checked anymore

LU-14817 build: __xa_set_mark is not checked anymore

LC__XA_SET_MARK does not check for __xa_set_mark anymore after
LU-9859, however the result variable still exists and its value
has changed from 'no' to 'yes'.

Test-Parameters: trivial
Fixes: 84e12028be ("LU-9859 libcfs: add support for Xarray")
Signed-off-by: Vitaly Fertman <vitaly.fertman@hpe.com>
Change-Id: I24fffe7f2727b1d892ec3cabfc6e65ae8f68e024
Reviewed-on: https://review.whamcloud.com/44138
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Tested-by: jenkins <devops@whamcloud.com>
Reviewed-by: James Simmons <jsimmons@infradead.org>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>