MAINTAINERS: Remove the Bard Liao from the MAINTAINERS of Realtek CODECs

Remove the maintainer "Bard Liao" since he had quitted from Realtek.
Signed-off-by: Oder Chiou <oder_chiou@realtek.com>
Link: https://lore.kernel.org/r/3ae27357f98a406a958304386a1457bc@realtek.comSigned-off-by: Mark Brown <broonie@kernel.org>

MAINTAINERS

@@ -13934,7 +13934,6 @@ F:	include/linux/platform_data/rtc-*
 F:	tools/testing/selftests/rtc/
 
 REALTEK AUDIO CODECS
-M:	Bard Liao <bardliao@realtek.com>
 M:	Oder Chiou <oder_chiou@realtek.com>
 S:	Maintained
 F:	sound/soc/codecs/rt*