gitg: Move from gnome scope to top-level

Uses gvfs from top-level now.

pkgs/desktops/gnome/default.nix

@@ -192,8 +192,6 @@ in
 
 #### Misc -- other packages on http://ftp.gnome.org/pub/GNOME/sources/
 
-  gitg = callPackage ./misc/gitg { };
-
   gnome-applets = callPackage ./misc/gnome-applets { };
 
   gnome-flashback = callPackage ./misc/gnome-flashback { };
@@ -229,6 +227,7 @@ in
   file-roller = lib.warn "The ‘gnome.file-roller’ was moved to top-level. Please use ‘pkgs.file-roller’ directly." pkgs.file-roller; # Added on 2024-06-13.
   geary = lib.warn "The ‘gnome.geary’ was moved to top-level. Please use ‘pkgs.geary’ directly." pkgs.geary; # Added on 2024-06-22.
   ghex = lib.warn "The ‘gnome.ghex’ was moved to top-level. Please use ‘pkgs.ghex’ directly." pkgs.ghex; # Added on 2024-06-22.
+  gitg = lib.warn "The ‘gnome.gitg’ was moved to top-level. Please use ‘pkgs.gitg’ directly." pkgs.gitg; # Added on 2024-06-22.
   gnome-autoar = lib.warn "The ‘gnome.gnome-autoar’ was moved to top-level. Please use ‘pkgs.gnome-autoar’ directly." pkgs.gnome-autoar; # Added on 2024-06-13.
   gnome-common = lib.warn "The ‘gnome.gnome-common’ was moved to top-level. Please use ‘pkgs.gnome-common’ directly." pkgs.gnome-common; # Added on 2024-06-22.
   gnome-calculator = lib.warn "The ‘gnome.gnome-calculator’ was moved to top-level. Please use ‘pkgs.gnome-calculator’ directly." pkgs.gnome-calculator; # Added on 2024-06-22.

pkgs/top-level/all-packages.nix

@@ -30995,8 +30995,6 @@ with pkgs;
 
   gitolite = callPackage ../applications/version-management/gitolite { };
 
-  inherit (gnome) gitg;
-
   gmrun = callPackage ../applications/misc/gmrun { };
 
   gnucash = callPackage ../applications/office/gnucash { };