staging: mt7621-mmc: Remove obsolete Kconfig flags

These values are not referred to anywhere else in the kernel. Card
detect is controlled by the device tree property "mediatek,cd-poll",
and there is no driver support for eMMC whatsoever.
Signed-off-by: George Hilliard <thirtythreeforty@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/mt7621-mmc/Kconfig

@@ -6,11 +6,3 @@ config MTK_AEE_KDUMP
 	bool "MTK AEE KDUMP"
 	depends on MTK_MMC
 
-config MTK_MMC_CD_POLL
-	bool "Card Detect with Polling"
-	depends on MTK_MMC
-
-config MTK_MMC_EMMC_8BIT
-	bool "eMMC 8-bit support"
-	depends on MTK_MMC && RALINK_MT7628
-