media: cxusb: Revert "media: cxusb: add raw mode support for, Medion MD95700"

This patch shouldn't have been included in the pull request as it adds
a non-standard raw mode that is for debugging only. So revert
commit ead14a70.

Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>