Remove DwmFlush()

src/config.cpp

@@ -438,7 +438,6 @@ namespace config {
     {},  // encoder
     {},  // adapter_name
     {},  // output_name
-    true  // dwmflush
   };
 
   audio_t audio {
@@ -1034,7 +1033,6 @@ namespace config {
     string_f(vars, "encoder", video.encoder);
     string_f(vars, "adapter_name", video.adapter_name);
     string_f(vars, "output_name", video.output_name);
-    bool_f(vars, "dwmflush", video.dwmflush);
 
     path_f(vars, "pkey", nvhttp.pkey);
     path_f(vars, "cert", nvhttp.cert);