remove a deprecated function

include/window.h

@@ -39,7 +39,6 @@ window_t* window_create(int width, int height, const char* title);
 void window_destroy(window_t* s);
 bool window_pollevent(window_t* s);
 void window_blit(window_t* s, const uint32_t* framebuffer);
-void window_limit_framerate(window_t* s, int target_fps);
 bool window_is_key_down(window_t* s, int key_scancode);
 bool window_is_mouse_button_down(window_t* s, int button_index);
 void window_get_mouse_position(window_t* s, int* x, int* y);