Revert: 4c59dfb6, move DoPaletteAnimations back into GameLoop

Race fix to follow

src/video/null_v.cpp

@@ -51,14 +51,12 @@ void VideoDriver_Null::MainLoop()
 	if (this->until_exit) {
 		while (!_exit_game) {
 			::GameLoop();
-			::GameLoopPaletteAnimations();
 			::InputLoop();
 			::UpdateWindows();
 		}
 	} else {
 		for (int i = 0; i < this->ticks; i++) {
 			::GameLoop();
-			::GameLoopPaletteAnimations();
 			::InputLoop();
 			::UpdateWindows();
 		}

src/video/video_driver.cpp

@@ -34,10 +34,6 @@ void VideoDriver::GameLoop()
 		std::lock_guard<std::mutex> lock(this->game_state_mutex);
 
 		::GameLoop();
-
-		// TODO: lock
-		::GameLoopPaletteAnimations();
-		// TODO: unlock
 	}
 }