font-manager: drop included patch, removed meson flag

pkgs/applications/misc/font-manager/default.nix

@@ -1,4 +1,4 @@
-{ stdenv, fetchFromGitHub, meson, ninja, gettext, python3, fetchpatch,
+{ stdenv, fetchFromGitHub, meson, ninja, gettext, python3,
   pkgconfig, libxml2, json-glib , sqlite, itstool, librsvg, yelp-tools,
   vala, gtk3, gnome3, desktop-file-utils, wrapGAppsHook, gobject-introspection
 }:
@@ -38,19 +38,6 @@ stdenv.mkDerivation rec {
     gnome3.adwaita-icon-theme
   ];
 
-  mesonFlags = [
-    "-Ddisable_pycompile=true"
-  ];
-
-  patches = [
-    # fix build with Vala 0.46
-    (fetchpatch {
-      url = "https://github.com/FontManager/font-manager/commit/c73b40de11f376f4515a0edfe97fb3721a264b35.patch";
-      sha256 = "0lacwsifgvda2r3z6j2a0svdqr6mgav7zkvih35xa8155y8wfpnw";
-      excludes = [ "fedora/font-manager.spec" ];
-    })
-  ];
-
   postPatch = ''
     chmod +x meson_post_install.py
     patchShebangs meson_post_install.py