staging: lustre: osc: osc_object_ast_clear() LBUG

An OSC object could be destroyed with AGL locks waiting for granted,
so we'd get rid of the osc_object_ast_clear() assertion that its
dlm locks all getting granted.

Signed-off-by: Bobi Jam <bobijam.xu@intel.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-6042
Reviewed-on: http://review.whamcloud.com/13163


Reviewed-by: Jinshan Xiong <jinshan.xiong@intel.com>
Reviewed-by: Niu Yawei <yawei.niu@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>
Signed-off-by: James Simmons <jsimmons@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>