V4L/DVB (9664): af9015: don't reconnect device in USB-bus

Don't reconnect device in the USB-bus. Reconnect command was not
executed every time by device firmware and that causes harm.
Reconnection is not needed so remove it.

Signed-off-by: Jose Alberto Reguero <jareguero@telefonica.net>
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>