Revert "gfs2: fix infinite loop when checking ail item count before go_inval"

Revert "gfs2: fix infinite loop when checking ail item count before go_inval"

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 33dbd1e41a1d ("gfs2: fix infinite loop when checking ail
item count before go_inval").

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