Windows CMake: don't try to link dxguid, it's unavailable when using Visual Studio's XP-compatible toolset.

CMakeLists.txt

@@ -1138,7 +1138,7 @@ elseif(WINDOWS)
     set(SOURCE_FILES ${SOURCE_FILES} ${JOYSTICK_SOURCES})
     if(HAVE_DINPUT_H)
       set(SDL_JOYSTICK_DINPUT 1)
-      list(APPEND EXTRA_LIBS dinput8 dxguid)
+      list(APPEND EXTRA_LIBS dinput8)
       if(CMAKE_COMPILER_IS_MINGW)
         list(APPEND EXTRA_LIBS dxerr8)
       elseif (NOT USE_WINSDK_DIRECTX)