Revert "[media] radio-aimslab: Use LM7000 driver"

This reverts commit bece083a.

As requested by Hans Verkuil:
> You accidentally merged the wrong first version of the lm7000 patch series.
>
> These are the correct second version patches:
>
> http://patchwork.linuxtv.org/patch/11689/
> http://patchwork.linuxtv.org/patch/11690/
> http://patchwork.linuxtv.org/patch/11691/


>
> The second version is much simpler and doesn't require the creation of a whole
> new driver.

Requested-by: Hans Verkuil <hverkuil@xs4all.nl>
Cc: Ondrej Zary <linux@rainbow-software.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>