Settings: Drop audio sync option

Not relevant since time stretching was added.

src/frontend-common/fullscreen_ui.cpp

@@ -3185,11 +3185,6 @@ void FullscreenUI::DrawAudioSettingsPage()
                         "Audio", "OutputLatencyMS", Settings::DEFAULT_AUDIO_OUTPUT_LATENCY_MS, 1, 500, "%d ms");
   }
 
-  DrawToggleSetting("Sync To Output",
-                    "Throttles the emulation speed based on the audio backend pulling audio "
-                    "frames. Enable to reduce the chances of crackling.",
-                    "Audio", "Sync", true);
-
   EndMenuButtons();
 }