Prevent softlock on shutdown and various cleanup

src/video_core/renderer_base.h

@@ -35,9 +35,6 @@ public:
     /// specific implementation)
     virtual void TryPresent(int timeout_ms) = 0;
 
-    /// Marks the presentation buffer as complete and swaps it back into the pool
-    virtual void PresentComplete() = 0;
-
     /// Prepares for video dumping (e.g. create necessary buffers, etc)
     virtual void PrepareVideoDumping() = 0;