Hide AudioOffset from Lethal Config

It is a niche option, and having two sliders next to each other might be
overwhelming for players.

MuzikaGromche/Plugin.cs

@@ -2613,7 +2613,9 @@ namespace MuzikaGromche
             AudioOffset = configFile.Bind("General", "Audio Offset", 0f, new ConfigDescription(
                 "Adjust audio offset (in seconds).\n\nIf you are playing with Bluetooth headphones and experiencing a visual desync, try setting this to about negative 0.2.\n\nIf your video output has high latency (like a long HDMI cable etc.), try positive values instead.",
                 new AcceptableValueRange<float>(-0.5f, 0.5f)));
+#if false // too much configurability
             LethalConfigManager.AddConfigItem(new FloatSliderConfigItem(AudioOffset, requiresRestart: false));
+#endif
 
             SkipExplicitTracks = configFile.Bind("General", "Skip Explicit Tracks", false,
                 new ConfigDescription("When choosing tracks at random, skip the ones with Explicit Content/Lyrics."));