MS_* (MS_NOSUID ... etc) get redefined in <sys/mount.h> after we include
<linux/fs.h>, at least on my fairly old set of headers. Fix this by
simply removing the inclusion of mount.h, which isn't needed.
Fixes sparse warnings about this.
Signed-off-by: Eric Sandeen <sandeen@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Eric Sandeen <sandeen@sandeen.net>