Revert "gfs2: Allow some glocks to be used during withdraw"

Revert "gfs2: Allow some glocks to be used during withdraw"

The current withdraw code duplicates the journal recovery code gfs2
already has for dealing with node failures, and it does so poorly.  That
code was added because when releasing a lockspace, we didn't have a way
to indicate that the lockspace needs recovery.  We now do have this
feature, so the current withdraw code can be removed almost entirely.
This is one of several steps towards that.

Reverts commit a72d2401f54b ("gfs2: Allow some glocks to be used during
withdraw").

Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>