staging/lustre: Remove lquota_glb_rec, lquota_slv_rec and lquota_acct_rec

These server-only structures and some supporting defines are unused
on the client.

Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>