Revert "init.smdk4x12.rc: Fix ext4 and f2fs formatted SD card access"

This reverts commit 00333111f8eab383dfe42e1f015415ed173f115d.
init.smdk4x12.rc: Follow smdk4412-common's SD card permission rule

Fix for ext4 and f2fs formatted SD card access already in vold

Change-Id: Iec81c045f71f131ef21c1a6f6591c16df8a055c2