remote-ls: Skip disabled remotes
remote-ls: Skip disabled remotes

The remote-ls command should skip remotes that have "xa.disable" set to
true or have no URL set, which can happen for remotes added for flatpak
bundle files.

Fixes https://github.com/flatpak/flatpak/issues/1427

Closes: #1457
Approved by: alexlarsson

handsome-feng/flatpak,matthiasclasen/flatpak,flatpak/flatpak,handsome-feng/flatpak,matthiasclasen/flatpak,handsome-feng/flatpak,flatpak/flatpak,handsome-feng/flatpak,flatpak/flatpak,handsome-feng/flatpak,matthiasclasen/flatpak,flatpak/flatpak,matthiasclasen/flatpak,flatpak/flatpak,matthiasclasen/flatpak