staging: comedi: addi_apci_2200: remove eeprom support code

Reading the eeprom on the board supported by this driver is not
necessary. All the information required is in the boardinfo.

Remove the eeprom support code since it's not really interesting
or useful.

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