Revert "Allow multiple emulated storages at the same time."

This reverts commit a1be5de7813ba0c9cc2bc4bdf09ccab7e4b99fe4.
Revert "Add missing ACTION_MEDIA_UNMOUNTED intent"

This reverts commit 8b8e359b6e505d34ed93cd01af27ee11dd7c46b0.
Revert "PackageManager: fix app lib migration for device with /datadata"

This reverts commit 4687e69bff8adf86951a3b36b796f1b72d6b12be.
Revert "Allow mounting of multiple volumes via mass storage (framework part)"

This reverts commit 5a6a11cf5387ef1e08dc983f997259449bd0448d.
Revert "Allow USB notification to show when primary SD allows UMS and MTP"

This reverts commit 647608ca81be18abcb797d92a51645b68d8913e1.
Revert "Add option for switching between UMS and MTP/PTP mode. (1/2)"

This reverts commit 4c766653549b6e59e69c2a1b4f1c0ca09b04b4c6.
Revert "Add UsbDebuggingManager and UsbDebuggingActivity to LegacyUsbManager"

This reverts commit 82602a9f3ba456e70530097e5e53206004cc1865.