libretro.melondsds: remove patch that don't seem to be necessary anymore

pkgs/applications/emulators/libretro/cores/melondsds.nix

@@ -66,7 +66,6 @@ mkLibretroCore rec {
     hash = "sha256-EeXYibPV9BPazC/i5UqXEd4BKlIZbNbPNgpsoo4ws7k=";
   };
 
-  patches = [ ./patches/melondsds-noslirpcopy.patch ];
   postPatch = ''
     substituteInPlace CMakeLists.txt \
       --replace-fail "find_package(Git REQUIRED)" ""

pkgs/applications/emulators/libretro/cores/patches/melondsds-noslirpcopy.patch

@@ -1,17 +0,0 @@
-diff --git a/cmake/libslirp.cmake b/cmake/libslirp.cmake
-index 1cb6758..bef1793 100644
---- a/cmake/libslirp.cmake
-+++ b/cmake/libslirp.cmake
-@@ -2,12 +2,6 @@ add_library(slirp STATIC
-         src/glib-stub/glib.c
- )
- 
--# Copy libslirp's files to another directory so that we can include it as <slirp/libslirp.h>
--file(MAKE_DIRECTORY "${libslirp_BINARY_DIR}/include")
--file(REMOVE_RECURSE "${libslirp_BINARY_DIR}/include/slirp")
--file(COPY "${libslirp_SOURCE_DIR}/src" DESTINATION "${libslirp_BINARY_DIR}/include")
--file(RENAME "${libslirp_BINARY_DIR}/include/src" "${libslirp_BINARY_DIR}/include/slirp")
--
- target_include_directories(slirp PUBLIC
-     "${libslirp_BINARY_DIR}/include"
-     "${libslirp_SOURCE_DIR}/src"