clipboard-indicator: removed broken flag.

[dasj19]

Motivation for this change

This gnome3 extension still works with gnome3.34, making the broken flag unnecessary.

Things done

Removed the traces that made the extension broken and uninstallable via normal ways.

• Tested using sandboxing (nix.useSandbox on NixOS, or option sandbox in nix.conf on non-NixOS linux)
• Built on platform(s)
  • NixOS
  • macOS
  • other Linux distributions
• Tested via one or more NixOS test(s) if existing and applicable for the change (look inside nixos/tests)
• Tested compilation of all pkgs that depend on this change using nix-shell -p nixpkgs-review --run "nixpkgs-review wip"
• Tested execution of all binary files (usually in ./result/bin/)
• Determined the impact on package closure size (by running nix path-info -S before and after)
• Ensured that relevant documentation is up to date
• Fits CONTRIBUTING.md.
  cc @jonafato

[lasandell]

I tested this and did not find any issues. The upstream repo has added 3.34 to the supported versions in the extension's metadata.json, but there is no later version tag than the v30 tag we already reference. I vote to merge it.

[dasj19]

@GrahamcOfBorg build gnomeExtensions.clipboard-indicator

[dasj19]

@hedning, @jtojnar can we get this small gnome-related change approved?

[hedning]

Right, seems to work with 3.36 too, so seems good to me: Tudmotu/gnome-shell-extension-clipboard-indicator#201