MAINTAINERS: Drop link to git for SDHCI

The git tree isn't used to maintain SDHCI, but instead we use the common
MMC git tree. Let's drop it to avoid confusion.
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>

MAINTAINERS

@@ -13608,7 +13608,6 @@ F:	drivers/mmc/host/sdhci-brcmstb*
 SECURE DIGITAL HOST CONTROLLER INTERFACE (SDHCI) DRIVER
 M:	Adrian Hunter <adrian.hunter@intel.com>
 L:	linux-mmc@vger.kernel.org
-T:	git git://git.infradead.org/users/ahunter/linux-sdhci.git
 S:	Maintained
 F:	drivers/mmc/host/sdhci*
 F:	include/linux/mmc/sdhci*