Hide button for Non Enabled Audio Outputs

[ged_hickman1]

This has been requested many times, the earliest I could find was 2018.

Allow Removal Of Devices on Audio Settings Page

Hi, This option is required for situations where I sell on a DAC, or perhaps a friend brings over a DAC to try out. Once the device is in the Audio list there’s no way to remove it, making finding what you’re after sometimes more of a pain (especially when the next DAC is trialled, and it’s hard to work out/remember what’s what!). Many thanks.