MinGW: Remove direct mingw-std-threads includes

src/video/sdl2_default_v.cpp

@@ -26,10 +26,6 @@
 #include <SDL.h>
 #include <mutex>
 #include <condition_variable>
-#if defined(__MINGW32__)
-#include "../3rdparty/mingw-std-threads/mingw.mutex.h"
-#include "../3rdparty/mingw-std-threads/mingw.condition_variable.h"
-#endif
 #ifdef __EMSCRIPTEN__
 #	include <emscripten.h>
 #	include <emscripten/html5.h>

src/video/sdl2_opengl_v.cpp

@@ -30,10 +30,6 @@
 #include <SDL.h>
 #include <mutex>
 #include <condition_variable>
-#if defined(__MINGW32__)
-#include "../3rdparty/mingw-std-threads/mingw.mutex.h"
-#include "../3rdparty/mingw-std-threads/mingw.condition_variable.h"
-#endif
 #include <GL/gl.h>
 #include "../3rdparty/opengl/glext.h"
 #include "opengl.h"

src/video/sdl2_v.h

@@ -11,9 +11,6 @@
 #define VIDEO_SDL_H
 
 #include <condition_variable>
-#if defined(__MINGW32__)
-#include "../3rdparty/mingw-std-threads/mingw.condition_variable.h"
-#endif
 
 #include "video_driver.hpp"
 #include <vector>

src/video/video_driver.hpp

@@ -23,11 +23,6 @@
 #include <thread>
 #include <vector>
 #include <functional>
-#if defined(__MINGW32__)
-#include "../3rdparty/mingw-std-threads/mingw.mutex.h"
-#include "../3rdparty/mingw-std-threads/mingw.condition_variable.h"
-#include "../3rdparty/mingw-std-threads/mingw.thread.h"
-#endif
 
 extern std::string _ini_videodriver;
 extern std::vector<Dimension> _resolutions;

src/video/win32_v.h

@@ -13,10 +13,6 @@
 #include "video_driver.hpp"
 #include <mutex>
 #include <condition_variable>
-#if defined(__MINGW32__)
-#include "../3rdparty/mingw-std-threads/mingw.mutex.h"
-#include "../3rdparty/mingw-std-threads/mingw.condition_variable.h"
-#endif
 #include <vector>
 
 /** Base class for Windows video drivers. */