staging/lustre: Remove commented out obd functions

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

drivers/staging/lustre/lustre/include/obd_class.h

@@ -1328,57 +1328,6 @@ static inline int obd_register_observer(struct obd_device *obd,
 	return 0;
 }
 
-#if 0
-static inline int obd_register_page_removal_cb(struct obd_export *exp,
-					       obd_page_removal_cb_t cb,
-					       obd_pin_extent_cb pin_cb)
-{
-	int rc;
-
-	OBD_CHECK_DT_OP(exp->exp_obd, register_page_removal_cb, 0);
-	OBD_COUNTER_INCREMENT(exp->exp_obd, register_page_removal_cb);
-
-	rc = OBP(exp->exp_obd, register_page_removal_cb)(exp, cb, pin_cb);
-	return rc;
-}
-
-static inline int obd_unregister_page_removal_cb(struct obd_export *exp,
-						 obd_page_removal_cb_t cb)
-{
-	int rc;
-
-	OBD_CHECK_DT_OP(exp->exp_obd, unregister_page_removal_cb, 0);
-	OBD_COUNTER_INCREMENT(exp->exp_obd, unregister_page_removal_cb);
-
-	rc = OBP(exp->exp_obd, unregister_page_removal_cb)(exp, cb);
-	return rc;
-}
-
-static inline int obd_register_lock_cancel_cb(struct obd_export *exp,
-					      obd_lock_cancel_cb cb)
-{
-	int rc;
-
-	OBD_CHECK_DT_OP(exp->exp_obd, register_lock_cancel_cb, 0);
-	OBD_COUNTER_INCREMENT(exp->exp_obd, register_lock_cancel_cb);
-
-	rc = OBP(exp->exp_obd, register_lock_cancel_cb)(exp, cb);
-	return rc;
-}
-
-static inline int obd_unregister_lock_cancel_cb(struct obd_export *exp,
-						 obd_lock_cancel_cb cb)
-{
-	int rc;
-
-	OBD_CHECK_DT_OP(exp->exp_obd, unregister_lock_cancel_cb, 0);
-	OBD_COUNTER_INCREMENT(exp->exp_obd, unregister_lock_cancel_cb);
-
-	rc = OBP(exp->exp_obd, unregister_lock_cancel_cb)(exp, cb);
-	return rc;
-}
-#endif
-
 /* metadata helpers */
 static inline int md_getstatus(struct obd_export *exp, struct lu_fid *fid)
 {