TAKE - remove some dead code

[Steve Lord <lord@xxxxxxx>]

Remove a dead code path from mount, noticed by Al Viro.


Date:  Mon Jun 16 07:22:52 PDT 2003
Workarea:  jen.americas.sgi.com:/src/lord/xfs-linux.2.4

The following file(s) were checked into:
  bonnie.engr.sgi.com:/isms/slinx/2.4.x-xfs


Modid:  2.4.x-xfs:slinx:151226a
linux/fs/xfs/xfs_iocore.c - 1.42
linux/fs/xfs/xfs_mount.h - 1.173
        - drop dev arg from xfs_mountfs

linux/fs/xfs/xfs_mount.c - 1.330
        - drop dev arg from xfs_mountfs, and the noio path which is never
          executed.