MAINTAINERS: drop entry for VIA SD/MMC controller

EMail addresses of both maintainers bounce. Since there have been only
cleanups for the last 10 years, let it fall back to the default MMC
entry.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://lore.kernel.org/r/20240621101833.24703-2-wsa+renesas@sang-engineering.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

Author: Wolfram Sang

MAINTAINERS

@@ -23645,12 +23645,6 @@ M:	Kevin Brace <kevinbrace@bracecomputerlab.com>
 S:	Maintained
 F:	drivers/net/ethernet/via/via-rhine.c
 
-VIA SD/MMC CARD CONTROLLER DRIVER
-M:	Bruce Chang <brucechang@via.com.tw>
-M:	Harald Welte <HaraldWelte@viatech.com>
-S:	Maintained
-F:	drivers/mmc/host/via-sdmmc.c
-
 VIA UNICHROME(PRO)/CHROME9 FRAMEBUFFER DRIVER
 M:	Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
 L:	linux-fbdev@vger.kernel.org