Revert "msm_mmc: hack for avoiding the call of sdio_irq_thread. Needed for wl12xx"

This reverts commit 96fa4f878457b5a5da339957d8fabe93406b9121.
Fix Wi-Fi interruptions

Thanks to @M66B

Signed-off-by: Michael Bestas <mikeioannina@gmail.com>

Change-Id: I0962fb6440bb3f289f9aaf99dc188c0c441cb570