Revert "GFS2: free disk inode which is deleted by remote node -V2"

This reverts commit 970343cd ("GFS2: free disk inode which is
deleted by remote node -V2").

The original intent behind commit 970343cd was to cull dentries when a
remote node requests to demote an iopen glock, which happens when the
remote node tries to delete the inode.  This is now handled by
gfs2_try_evict(), which is called via iopen_go_callback() ->
gfs2_queue_try_to_evict().
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>

fs/gfs2/dentry.c

@@ -83,26 +83,8 @@ static int gfs2_dhash(const struct dentry *dentry, struct qstr *str)
 	return 0;
 }
 
-static int gfs2_dentry_delete(const struct dentry *dentry)
-{
-	struct gfs2_inode *ginode;
-
-	if (d_really_is_negative(dentry))
-		return 0;
-
-	ginode = GFS2_I(d_inode(dentry));
-	if (!gfs2_holder_initialized(&ginode->i_iopen_gh))
-		return 0;
-
-	if (test_bit(GLF_DEMOTE, &ginode->i_iopen_gh.gh_gl->gl_flags))
-		return 1;
-
-	return 0;
-}
-
 const struct dentry_operations gfs2_dops = {
 	.d_revalidate = gfs2_drevalidate,
 	.d_hash = gfs2_dhash,
-	.d_delete = gfs2_dentry_delete,
 };