staging: vt6656: Remove line from TODO

Remove checkpatch.pl line from TODO as no valid checkpatch recommendations
still present.

Signed-off-by: Teddy Engel <engel.teddy@gmail.com>
Reviewed-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/20240613132853.2249-1-engel.teddy@gmail.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>