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>