justfiles from oblue-os bling are clashing with ublue-os config justfiles

[HerrNaN]

➤ just
error: Alias `devbox` defined on line 116 shadows recipe `devbox` defined on line 32
   --> /usr/share/ublue-os/just/70-nix.just:116:7
    |
116 | alias devbox := setup-devbox
    |       ^^^^^^

devbox is defined in both:

• /usr/share/ublue-os/just/70-nix.just
• /usr/share/ublue-os/just/bling/nix.just

I'd say the non-bling justfiles from ublue-os is good enough for us, let's get rid of the bling ones!