add setting to disable rounded image corners

ui/widgets/largenowplayingcard.go

@@ -19,8 +19,7 @@ import (
 type LargeNowPlayingCard struct {
 	CaptionedImage
 
-	DisableRating     bool
-	ImageCornerRadius float32
+	DisableRating bool
 
 	isRadio                 bool
 	trackName               *widget.RichText
@@ -164,6 +163,5 @@ func (n *LargeNowPlayingCard) Refresh() {
 	} else {
 		n.rating.Enable()
 	}
-	n.cover.CornerRadius = n.ImageCornerRadius
 	n.BaseWidget.Refresh()
 }