mb/asrock/h110m: Remove MAINBOARD_POWER_ON_AFTER_POWER_FAIL

The MAINBOARD_POWER_ON_AFTER_POWER_FAIL symbol was removed in
Commit 9faae2b939.
The default is currently to keep power off after a power failure.

Signed-off-by: Martin Roth <martin@coreboot.org>
Change-Id: Ib2ef450f5c64f663b9aa88f8870250e92898e308
Reviewed-on: https://review.coreboot.org/c/coreboot/+/47671
Reviewed-by:  Felix Singer <felixsinger@posteo.net>
Reviewed-by: Maxim Polyakov <max.senia.poliak@gmail.com>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Frans Hendriks <fhendriks@eltan.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/mainboard/asrock/h110m/Kconfig

@@ -41,9 +41,4 @@ config DIMM_SPD_SIZE
 	int
 	default 512 #DDR4
 
-# This is overridden if CMOS is used for configuration values.
-config MAINBOARD_POWER_ON_AFTER_POWER_FAIL
-	bool
-	default n
-
 endif