Removed references to bbolt and its license info from "About" screen and LICENSE-3RD-PARTY.txt as it's no longer used. Added FFmpeg license details to LICENSE-3RD-PARTY.txt.

internal/gui/view/about.go

@@ -524,19 +524,6 @@ func license3RDParty() *fyne.Container {
 		widget.NewLabel("Copyright (c) 2019 Yusuke Inuzuka"),
 		canvas.NewLine(colornames.Darkgreen),
 
-		container.NewHBox(widget.NewHyperlink("go.etcd.io/bbolt", &url.URL{
-			Scheme: "https",
-			Host:   "pkg.go.dev",
-			Path:   "go.etcd.io/bbolt",
-		})),
-		container.NewHBox(widget.NewHyperlink("MIT License", &url.URL{
-			Scheme: "https",
-			Host:   "github.com",
-			Path:   "etcd-io/bbolt/blob/main/LICENSE",
-		})),
-		widget.NewLabel("Copyright (c) 2013 Ben Johnson"),
-		canvas.NewLine(colornames.Darkgreen),
-
 		container.NewHBox(widget.NewHyperlink("golang.org/x/image", &url.URL{
 			Scheme: "https",
 			Host:   "pkg.go.dev",