Remove obsolete fat_cvf help text

The text removed by the following patch refers to functionality that never
worked, to non-existing documentation file, and to mount options marked as
obsolete in the module.

Signed-off-by: Alexander E. Patrakov <patrakov@ums.usu.ru>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
1 file changed