Revert "external storage configurations as of Android 4.4"

It's obvious from IRC that the original committer was pushing untested code and +1ing it despite the fact that his device wouldn't even boot.

This reverts commit 43bec7ae81db0a261d2a9e156aba11e87b91ab56.

Change-Id: Ie8f0af926dcbdcd315d05a635126da3d0c8c979b