Revert "settings: add back all keyboard IME features back (2/2)"

This reverts commit 41700ebe84d7e123a6e40c2921e75926d984b4ec.
Revert "Option to use volume keys to control media volume anytime [2/2]"

This reverts commit 7f312bea54667d977d2699236a0c0dd9a35f8835.
Revert "Settings: add safe headset volume and less annoying sound notification"

This reverts commit 7123d72dc5a67a828c152fd0433e044d2fba9587.