pythonPackages.django: always build with the GIS componnents

There is no reason for django derivation to contain invalid GIS
extensions. This makes sure that the gis componnents (which are always
installed) can function properly.

pkgs/top-level/python-packages.nix

@@ -8936,16 +8936,6 @@ in modules // {
 
   django = self.django_1_10;
 
-  django_gis = self.django.override rec {
-    patches = [
-      (pkgs.substituteAll {
-        src = ../development/python-modules/django/1.10-gis-libs.template.patch;
-        geos = pkgs.geos;
-        gdal = pkgs.gdal;
-      })
-    ];
-  };
-
   django_1_10 = buildPythonPackage rec {
     name = "Django-${version}";
     version = "1.10";
@@ -8956,6 +8946,14 @@ in modules // {
       sha256 = "01bh5yra6zyxcpqacahbwfbn0y4ivw07j2jsw3crvmjzivb6if26";
     };
 
+    patches = [
+      (pkgs.substituteAll {
+        src = ../development/python-modules/django/1.10-gis-libs.template.patch;
+        geos = pkgs.geos;
+        gdal = self.gdal;
+      })
+    ];
+
     # patch only $out/bin to avoid problems with starter templates (see #3134)
     postFixup = ''
       wrapPythonProgramsIn $out/bin "$out $pythonPath"