overlays: remove unused threadpool

rpcs3/Emu/RSX/Overlays/overlays.cpp

@@ -1,6 +1,6 @@
 #include "stdafx.h"
 #include "overlays.h"
-#include "../GSRender.h"
+#include "../GSRender.h"
 #include "Input/pad_thread.h"
 
 LOG_CHANNEL(overlays);
@@ -152,25 +152,11 @@ namespace rsx
 			// Unreachable
 			return 0;
 		}
-
+
 		void user_interface::close(bool use_callback)
 		{
 			// Force unload
 			exit.release(true);
-			{
-				reader_lock lock(m_threadpool_mutex);
-				for (auto& worker : m_workers)
-				{
-					if (std::this_thread::get_id() != worker.get_id() && worker.joinable())
-					{
-						worker.join();
-					}
-					else
-					{
-						worker.detach();
-					}
-				}
-			}
 
 			pad::SetIntercepted(false);
 

rpcs3/Emu/RSX/Overlays/overlays.h

@@ -79,9 +79,6 @@ namespace rsx
 
 			std::function<void(s32 status)> on_close;
 
-			shared_mutex m_threadpool_mutex;
-			std::list<std::thread> m_workers;
-
 		public:
 			s32 return_code = CELL_OK;