pango: 1.43.0 -> 1.44.6, fixes CVE-2019-1010238

Bumping version to incorporate a security fix.

Addresses: https://github.com/NixOS/nixpkgs/issues/70120

Upstream fix:
https://gitlab.gnome.org/GNOME/pango/commit/490f8979a260c16b1df055eab386345da18a2d54

Additional change required to build docs:
https://gitlab.gnome.org/GNOME/pango/commit/71461689b0e34d873018d46bff555475019fbf4a

The dropped patch is already incorporated into the version.

pkgs/development/libraries/pango/default.nix

@@ -9,13 +9,13 @@ with stdenv.lib;
 
 let
   pname = "pango";
-  version = "1.43.0";
+  version = "1.44.6";
 in stdenv.mkDerivation rec {
   name = "${pname}-${version}";
 
   src = fetchurl {
     url = "mirror://gnome/sources/${pname}/${stdenv.lib.versions.majorMinor version}/${name}.tar.xz";
-    sha256 = "1lnxldmv1a12dq5h0dlq5jyzl4w75k76dp8cn360x2ijlm9w5h6j";
+    sha256 = "0v7qq3fv1c0dl80d4qxsvd6cmhh4ngih3w0zc40f4dw7hfx427iy";
   };
 
   # FIXME: docs fail on darwin
@@ -36,16 +36,8 @@ in stdenv.mkDerivation rec {
   propagatedBuildInputs = [ cairo glib libintl ] ++
     optional x11Support libXft;
 
-  patches = [
-    (fetchpatch {
-      # Add gobject-2 to .pc file
-      url = "https://gitlab.gnome.org/GNOME/pango/commit/546f4c242d6f4fe312de3b7c918a848e5172e18d.patch";
-      sha256 = "1cqhy4xbwx3ad7z5d1ks7smf038b9as8c6qy84rml44h0fgiq4m2";
-    })
-  ];
-
   mesonFlags = [
-    "-Denable_docs=${if stdenv.isDarwin then "false" else "true"}"
+    "-Dgtk_doc=${if stdenv.isDarwin then "false" else "true"}"
   ];
 
   enableParallelBuilding = true;