mb/*/*/Kconfig: Remove useless comment

Change-Id: Ibdff50761a205d936b0ebe067f418be0a2051798
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/29871
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Hellsenberg <th3fanbus@gmail.com>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: David Guckian
Reviewed-by: Werner Zeh <werner.zeh@siemens.com>

src/mainboard/emulation/qemu-i440fx/Kconfig

@@ -1,6 +1,6 @@
 if BOARD_EMULATION_QEMU_X86_I440FX
 
-config BOARD_SPECIFIC_OPTIONS # dummy
+config BOARD_SPECIFIC_OPTIONS
 	def_bool y
 	select CPU_QEMU_X86
 	select NO_MMCONF_SUPPORT