staging: r8188eu: remove unused eeprom defines

Remove some eeprom-related defines which are not used by the r8188eu
driver. This driver uses BOOT_FROM_EEPROM and EEPROM_EN instead of the
defines that this patch removes.

Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20220709171000.180481-2-martin@kaiser.cx


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>