netdevsim: remove unused sdev code

sdev.c code is merged into dev.c and is not used anymore.
it would be removed.

Reviewed-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
1 file changed