Revert "EmuGL: Deliver every frame to a callback"

This reverts commit 08d643e5eb

tools/emulator/opengl/host/renderer/main.cpp

@@ -120,7 +120,7 @@ int main(int argc, char *argv[])
     //
     // initialize Framebuffer
     //
-    bool inited = FrameBuffer::initialize(winWidth, winHeight, NULL, NULL);
+    bool inited = FrameBuffer::initialize(winWidth, winHeight);
     if (!inited) {
         fprintf(stderr,"Failed to initialize Framebuffer\n");
         return -1;