For the experimental NFS client, it should always flush dirty buffers before closing the NFSv4 opens, as the comment states. This patch deletes the call to nfscl_mustflush() which would return 0 for the case where a delegation still exists, which was incorrect and could cause crashes during recovery from an expired lease.
For the experimental NFS client, it should always flush dirty
buffers before closing the NFSv4 opens, as the comment states.
This patch deletes the call to nfscl_mustflush() which would
return 0 for the case where a delegation still exists, which
was incorrect and could cause crashes during recovery from
an expired lease.

MFC after:	1 week

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase