[media] drxd: remove a dead code

drivers/media/dvb-frontends/drxd_hard.c:2839 drxd_init() info: ignoring unreachable code.

Firmware request/release is not at drxd_init. So, we can remove
that dead code.

Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>