ARM: dts: msm: Do not specify card detect gpio for 8916 SKUI

according to hw, card detect gpio should not be specified.
Mark the slot as non-removeable as well so that polling will
not be enabled unnecessarily.

Change-Id: Iade4182c6835fa8bf45933c5eda9564895ecca9e
Signed-off-by: Guoping Yu <guopingy@codeaurora.org>