mmc: msm_sdcc: Remove unnecessary delay in interrupt context

msmsdcc_request_end when called with interrupts disabled inside an
interrupt handler adds an unnecessary 5ms delay on command timeouts,
which impacts system performance. Remove this delay.

Change-Id: I90aec109fe84f7b9f9a9362b5ee2d8d1310833af
Signed-off-by: Venkat Gopalakrishnan <venkatg@codeaurora.org>