gtk-sharp*: remove old optional Gnome2 dependencies

They were marked as optional with `dependency ? null`, however they
were references unconditionally in the `buildInputs`. I don't know how
all of this ever worked, but it's removed anyways now.

pkgs/development/libraries/gtk-sharp/2.0.nix

@@ -6,14 +6,6 @@
 , glib
 , pango
 , gtk2
-, GConf ? null
-, libglade ? null
-, libgtkhtml ? null
-, gtkhtml ? null
-, libgnomecanvas ? null
-, libgnomeui ? null
-, libgnomeprint ? null
-, libgnomeprintui ? null
 , libxml2
 , monoDLLFixer
 , autoconf
@@ -54,8 +46,8 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ pkg-config autoconf automake libtool which ];
 
   buildInputs = [
-    mono glib pango gtk2 GConf libglade libgnomecanvas
-    libgtkhtml libgnomeui libgnomeprint libgnomeprintui gtkhtml libxml2
+    mono glib pango gtk2
+    libxml2
   ];
 
   preConfigure = ''

pkgs/development/libraries/gtk-sharp/3.0.nix

@@ -6,14 +6,6 @@
 , glib
 , pango
 , gtk3
-, GConf ? null
-, libglade ? null
-, libgtkhtml ? null
-, gtkhtml ? null
-, libgnomecanvas ? null
-, libgnomeui ? null
-, libgnomeprint ? null
-, libgnomeprintui ? null
 , libxml2
 , monoDLLFixer
 }:
@@ -30,8 +22,8 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ pkg-config ];
   buildInputs = [
-    mono glib pango gtk3 GConf libglade libgnomecanvas
-    libgtkhtml libgnomeui libgnomeprint libgnomeprintui gtkhtml libxml2
+    mono glib pango gtk3
+    libxml2
   ];
 
   patches = [

pkgs/top-level/all-packages.nix

@@ -17057,17 +17057,9 @@ with pkgs;
 
   gtk-engine-murrine = callPackage ../development/libraries/gtk-engine-murrine { };
 
-  gtk-sharp-2_0 = callPackage ../development/libraries/gtk-sharp/2.0.nix {
-    inherit (gnome2) libglade libgtkhtml gtkhtml
-              libgnomecanvas libgnomeui libgnomeprint
-              libgnomeprintui GConf;
-  };
+  gtk-sharp-2_0 = callPackage ../development/libraries/gtk-sharp/2.0.nix { };
 
-  gtk-sharp-3_0 = callPackage ../development/libraries/gtk-sharp/3.0.nix {
-    inherit (gnome2) libglade libgtkhtml gtkhtml
-              libgnomecanvas libgnomeui libgnomeprint
-              libgnomeprintui GConf;
-  };
+  gtk-sharp-3_0 = callPackage ../development/libraries/gtk-sharp/3.0.nix { };
 
   gtk-sharp-beans = callPackage ../development/libraries/gtk-sharp-beans { };