Revert "Set sdcard as non-removable (workaround for mediaprovider bug)"

This reverts commit 79794c86b9e0da26c11a0c807f5f915a01784191.

Change-Id: I2e283ac76501c9a7dda12fba90c82540a3c58b93
Enable SD card accessibility

Change-Id: Id2a9f4044002cd48900f181d1732a87c9ef1ea70