sh: Drop CONFIG_FIRMWARE_EDID from defconfig files

CONFIG_FIRMWARE_EDID=y depends on X86 or EFI_GENERIC_STUB. Neither
is true here, so drop the lines from the defconfig files.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>