Revert "Allow USB notification to show when primary SD allows UMS and MTP"

This reverts commit 2e09dd123281b0d4c1098f1ca4f4c283fd6708d0.
Revert "Add option for switching between UMS and MTP/PTP mode. (1/2)"

This reverts commit e2b48d1ad35a3b026e3158e50c0795e4094be42e.