sysctl drivers: Remove dead binary sysctl support

sysctl drivers: Remove dead binary sysctl support

Now that sys_sysctl is a wrapper around /proc/sys all of
the binary sysctl support elsewhere in the tree is
dead code.

Cc: Jens Axboe <[email protected]>
Cc: Corey Minyard <[email protected]>
Cc: Greg Kroah-Hartman <[email protected]>
Cc: Matt Mackall <[email protected]>
Cc: Herbert Xu <[email protected]>
Cc: Neil Brown <[email protected]>
Cc: "James E.J. Bottomley" <[email protected]>
Acked-by: Clemens Ladisch <[email protected]> for drivers/char/hpet.c
Signed-off-by: Eric W. Biederman <[email protected]>