Revert "PSP: Throw SDL_Quit event upon exit"

This reverts commit e52e68d1602483f442adf0d49b1852e7d7435356.

src/main/psp/SDL_psp_main.c

@@ -8,8 +8,6 @@
 #include "SDL_main.h"
 #include <pspkernel.h>
 #include <pspthreadman.h>
-#include "SDL_events.h"
-#include "SDL_timer.h"
 
 #ifdef main
 #undef main
@@ -30,15 +28,7 @@ PSP_MAIN_THREAD_ATTR(THREAD_ATTR_VFPU | THREAD_ATTR_USER);
 
 int sdl_psp_exit_callback(int arg1, int arg2, void *common)
 {
-    SDL_Event exit_event;
-    SDL_QuitEvent quit;
-
-    quit.type = SDL_QUIT;
-    quit.timestamp = SDL_GetTicks();
-
-    exit_event.quit = quit;
-
-    SDL_PushEvent(&exit_event);
+    sceKernelExitGame();
     return 0;
 }