Removed unused hint includes.

src/joystick/emscripten/SDL_sysjoystick.c

@@ -28,7 +28,6 @@
 #include "SDL_events.h"
 
 #include "SDL_joystick.h"
-#include "SDL_hints.h"
 #include "SDL_assert.h"
 #include "SDL_timer.h"
 #include "SDL_log.h"

src/joystick/windows/SDL_windowsjoystick.c

@@ -37,7 +37,6 @@
 #include "SDL_events.h"
 #include "SDL_timer.h"
 #include "SDL_mutex.h"
-#include "SDL_hints.h"
 #include "SDL_joystick.h"
 #include "../SDL_sysjoystick.h"
 #include "../../thread/SDL_systhread.h"