XQM_MAXQUOTAS and MAXQUOTAS are, it appears, equivalent. Replace all
usage of XQM_MAXQUOTAS and remove it along with the unused XQM_*QUOTA
definitions.
Signed-off-by: NJeremy Cline <jcline@redhat.com>
Signed-off-by: NJan Kara <jack@suse.cz>