[BUG] Cannot delete Global MPV Paremeters

[Hidend]

Describe the bug
Basically, if you put some mpv parameter there and then you want to delete, it will come back, there's no way to delete it once you put it.

Screenshots/Videos
https://i.hidend.me/i/0YSaKaT.mp4

[Fredolx]

#371

fixed

I will release it for next update

[Fredolx]

Thank you for the detailed bug report :)