Revert "Handle USB power role 'sink'"

This patch treats AC wall chargers like phones supplying power. We only want to show the notification when connected to another phone, not to a AC wall charger.

Bug: 30418683
This reverts commit 01355161536787a55190ff3d2595fbf6c8056fe3.

Change-Id: I304c3f78916896ddb12129b11a0e691b3ef77819
1 file changed