media: Revert "[media] staging: lirc_imon: port remaining usb ids to imon and remove"

This code was ported without the necessary hardware to test. There
are multiple problems which are more easily solved by writing a
separate driver.

This reverts commit f41003a2.

Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>