Silencing a noisy fixme - feedback requested

[Austin English]

Howdy,

I was taking a look at some of the noisy fixme's, and wanted some
feedback on the attached patch.
This particular fixme is _really_ noisy...out of this
(http://bugs.winehq.org/attachment.cgi?id=16447)
log, it has 9635 of the 13117 lines!

"fixme:ntdll:NtLockFile I/O completion on lock not implemented yet" 9635 times!

Not sure if this is the best way to go about this or not. Any advice
appreciated (or if anyone else wants to silence it :-P).

-Austin