msm: board: remove CONFIG_MMC_MSM_CARD_HW_DETECTION featurization

Featurizing card detection with CONFIG_MMC_MSM_CARD_HW_DETECTION
is not giving any benefit hence remove it.

Change-Id: I933de6c3979352d29b150cc061622c5b70075787
Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org>