base-files: remove bbappend hacking on fstab
base-files: remove bbappend hacking on fstab

This approach breaks images which have Xen in DISTRO_FEATURES,
but are not booting under Xen (and mounting /proc/xen fails).

xencommons, xendriverdomain, or proc-xen.mount should take care of
mounting /proc/xen.

Signed-off-by: Chris Patterson <b8fb6d90d187509a6a522affebf31fb67d9f840b@ainfosec.com>
Signed-off-by: Bruce Ashfield <284cc737d174a260eec2a2a6324a304f84b1ae0f@windriver.com>

lgirdk/meta-virtualization,lgirdk/meta-virtualization,cardoe/meta-virtualization,cardoe/meta-virtualization,cardoe/meta-virtualization,lgirdk/meta-virtualization,lgirdk/meta-virtualization,lgirdk/meta-virtualization