axs10x: Get rid of both I2C and EEPROM who used to use I2C

With eb5ba3ae "i2c: Drop use of CONFIG_I2C_HARD" in place we
cannot use I2C EEPROM any longer so we're dropping all references to
both EEPROM and I2C which was only used for EEPROM.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Cc: Simon Glass <sjg@chromium.org>