Finish removal of Ganesha managed write buffer

The commit code to push data out of the write buffer and into the FSAL
had already been removed, so if anyone had actually turned this on,
seriously bad things would have happened.

Signed-off-by: Adam C. Emerson <aemerson@linuxbox.com>
Make lock/mutex logging more useful

Only output one line of output per lock operation.  Include line and
token.

Signed-off-by: Adam C. Emerson <aemerson@linuxbox.com>