libsoup_3: drop patches incorporated in 3.6.6

This package currently fails to build during the patch application step
as it includes patches that were incorporated into libsoup 3.6.6. These
patches were introduced in #468891 and #489681. Since they are now part
of a regular release, we thus drop these patches.

The List of commits where these changes are present can be seen at
https://gitlab.gnome.org/GNOME/libsoup/-/compare/3.6.5...3.6.6.

pkgs/development/libraries/libsoup/3.x.nix

@@ -2,7 +2,6 @@
   stdenv,
   lib,
   fetchurl,
-  fetchpatch,
   glib,
   meson,
   ninja,
@@ -38,19 +37,6 @@ stdenv.mkDerivation rec {
     hash = "sha256-Ue0K4G+dWkD0Af9Fni5fZS+aUQt3MOE1nuZtFNSHJ0A=";
   };
 
-  patches = [
-    (fetchpatch {
-      name = "soup-init-use-libdl-instead-of-gmodule-in-soup2_is_loaded.patch";
-      url = "https://gitlab.gnome.org/GNOME/libsoup/-/commit/2316e56a5502ac4c41ef4ff56a3266e680aca129.patch";
-      hash = "sha256-6TOM6sygVPpBWjTNgFG37JFbJDl0t2f9Iwidvh/isa4=";
-    })
-    (fetchpatch {
-      name = "CVE-2025-11021.patch";
-      url = "https://gitlab.gnome.org/GNOME/libsoup/-/commit/9e1a427d2f047439d0320defe1593e6352595788.patch";
-      hash = "sha256-08WiDnqg4//y8uPhIcV6svWdpRo27FmW+6DHy4OEZk8=";
-    })
-  ];
-
   depsBuildBuild = [
     pkg-config
   ];