tshark: remove reference in alias

since we restored the alias in all-packages.nix. Otherwise nix-instantiate -A tshark returns: 'Alias tshark is still in all-packages.nix'

pkgs/top-level/aliases.nix

···
   trebleshot = throw "trebleshot has been removed. It was archived upstream, so it's considered abandoned";
   trilium = throw "trilium has been removed. Please use trilium-desktop instead"; # Added 2020-04-29
   truecrypt = throw "'truecrypt' has been renamed to/replaced by 'veracrypt'"; # Converted to throw 2022-02-22
-  tshark = throw "'tshark' has been renamed to/replaced by 'wireshark-cli'"; # Converted to throw 2022-02-22
   tuijam = throw "tuijam has been removed because Google Play Music was discontinued"; # Added 2021-03-07
   turbo-geth = throw "turbo-geth has been renamed to erigon"; # Added 2021-08-08
   twister = throw "twister has been removed: abandoned by upstream and python2-only"; # Added 2022-04-26