staging: comedi: addi_apci_3120: remove unnecessary reset of the scan sequence

The scan sequence does not need to be reset when the driver is attached. Remove
the code in apci3120_reset() that does this.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>