USB: usb/mon/mon_bin.c: cleanups

- make the needlessly global struct mon_fops_binary static
- #if 0 the unused mon_bin_mmap() and related code

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Greg KH <greg@kroah.com>
Cc: Pete Zaitcev <zaitcev@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>