Partial revert of "MMC: added alternative MMC driver"

This reverts commit c75d96f.

Author: popcornmix

include/linux/mmc/card.h

@@ -296,7 +296,6 @@ struct mmc_card {
 #define MMC_QUIRK_BROKEN_SD_DISCARD	(1<<14)	/* Disable broken SD discard support */
 #define MMC_QUIRK_BROKEN_SD_CACHE	(1<<15)	/* Disable broken SD cache support */
 #define MMC_QUIRK_BROKEN_CACHE_FLUSH	(1<<16)	/* Don't flush cache until the write has occurred */
-#define MMC_QUIRK_ERASE_BROKEN	(1<<31)		/* Skip erase */
 
 	bool			written_flag;	/* Indicates eMMC has been written since power on */
 	bool			reenable_cmdq;	/* Re-enable Command Queue */