simple-scan: Move from gnome scope to top-level

nixos/modules/services/x11/desktop-managers/gnome.nix

@@ -417,7 +417,7 @@ in
             pkgs.loupe
             pkgs.nautilus
             pkgs.gnome-connections
-            simple-scan
+            pkgs.simple-scan
             pkgs.snapshot
             totem
             yelp

pkgs/desktops/gnome/default.nix

@@ -116,8 +116,6 @@ in
 
   rygel = callPackage ./core/rygel { };
 
-  simple-scan = callPackage ./core/simple-scan { };
-
   sushi = callPackage ./core/sushi { };
 
   totem = callPackage ./core/totem { };
@@ -251,6 +249,7 @@ in
   nautilus = lib.warn "The ‘gnome.nautilus’ was moved to top-level. Please use ‘pkgs.nautilus’ directly." pkgs.nautilus; # Added on 2024-06-13.
   nautilus-python = lib.warn "The ‘gnome.nautilus-python’ was moved to top-level. Please use ‘pkgs.nautilus-python’ directly." pkgs.nautilus-python; # Added on 2024-06-13.
   seahorse = lib.warn "The ‘gnome.seahorse’ was moved to top-level. Please use ‘pkgs.seahorse’ directly." pkgs.seahorse; # Added on 2024-06-22.
+  simple-scan = lib.warn "The ‘gnome.simple-scan’ was moved to top-level. Please use ‘pkgs.simple-scan’ directly." pkgs.simple-scan; # Added on 2024-06-22.
 
 #### Removals
   anjuta = throw "`anjuta` was removed after not being maintained upstream and losing control of its official domain."; # 2024-01-16

pkgs/top-level/all-packages.nix

@@ -34050,8 +34050,6 @@ with pkgs;
 
   sic-image-cli = callPackage ../tools/graphics/sic-image-cli { };
 
-  simple-scan = gnome.simple-scan;
-
   sioyek = libsForQt5.callPackage ../applications/misc/sioyek { };
 
   siproxd = callPackage ../applications/networking/siproxd { };