Revert "mmc: core: get drive types supported by eMMC cards"

This reverts commit 82ccc79fd3c4456b7b344db4576e874d324c6243.
Similar change is already present and this one just added the
duplicate code hence revert it.

Change-Id: Ia96ebe80e4fb7987f9e98e42575ff2ebe153dd23
Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org>
diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c
index 6c28df9..0c494d3 100644
--- a/drivers/mmc/core/mmc.c
+++ b/drivers/mmc/core/mmc.c
@@ -423,8 +423,6 @@
 	card->ext_csd.raw_card_type = ext_csd[EXT_CSD_CARD_TYPE];
 	mmc_select_card_type(card);
 
-	card->ext_csd.raw_driver_strength = ext_csd[EXT_CSD_DRIVER_STRENGTH];
-
 	card->ext_csd.raw_s_a_timeout = ext_csd[EXT_CSD_S_A_TIMEOUT];
 	card->ext_csd.raw_erase_timeout_mult =
 		ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT];