[media] Revert "[media] V4L: JPEG class documentation corrections"

This reverts commit feed0258, as the same issues
are already covered in another version of that patch that
was also applied (579e92ff

).

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>