treewide: gnome3.libgee -> libgee

Fix building with `config.allowAliases = false;`.

pkgs/applications/misc/regextester/default.nix

···
 , pkg-config
 , glib
 , gtk3
-, gnome3
+, libgee
 , meson
 , ninja
 , gobject-introspection
···
     pantheon.elementary-icon-theme
     pantheon.granite
     glib
-    gnome3.libgee
+    libgee
     gsettings-desktop-schemas
     gtk3
   ];

pkgs/development/libraries/libhttpseverywhere/default.nix

···
 { lib, stdenv, fetchurl, pkg-config, meson, ninja, makeFontsConf, vala, fetchpatch
-, gnome3, glib, json-glib, libarchive, libsoup, gobject-introspection }:
+, gnome3, libgee, glib, json-glib, libarchive, libsoup, gobject-introspection }:
 
 let
   pname = "libhttpseverywhere";
···
   };
 
   nativeBuildInputs = [ vala gobject-introspection meson ninja pkg-config ];
-  buildInputs = [ glib gnome3.libgee json-glib libsoup libarchive ];
+  buildInputs = [ glib libgee json-glib libsoup libarchive ];
 
   # Fixes build with vala >=0.42
   patches = [

pkgs/tools/security/gencfsm/default.nix

···
 { lib, stdenv, fetchurl, autoconf, automake, intltool, libtool, pkg-config, encfs
-, glib , gnome3, gtk3, libgnome-keyring, vala, wrapGAppsHook, xorg, gobject-introspection
+, glib , libgee, gtk3, libgnome-keyring, vala, wrapGAppsHook, xorg, gobject-introspection
 }:
 
 stdenv.mkDerivation rec {
···
 
   nativeBuildInputs = [ pkg-config ];
   buildInputs = [ autoconf automake intltool libtool vala glib encfs
-    gtk3 libgnome-keyring gnome3.libgee xorg.libSM xorg.libICE
+    gtk3 libgnome-keyring libgee xorg.libSM xorg.libICE
     wrapGAppsHook gobject-introspection  ];
 
   patches = [ ./makefile-mkdir.patch ];