Always show "Advanced" section in audio settings

It was confusing, and users liked audio passthrough more than we hoped
(also multichannel PCM worked worse than we hoped).

resources/settings/settings_description.json

@@ -158,10 +158,6 @@
         "value": "normalize",
         "default": true
       },
-      {
-        "value": "advanced",
-        "default": false
-      },
       {
         "value": "exclusive",
         "default": false,

src/settings/AudioSettingsController.cpp

@@ -28,7 +28,7 @@ void AudioSettingsController::valuesUpdated(const QVariantMap& values)
   SettingsSection* audioSection = SettingsComponent::Get().getSection(SETTINGS_SECTION_AUDIO);
   auto prevDescriptions = audioSection->descriptions();
 
-  bool advanced = SettingsComponent::Get().value(SETTINGS_SECTION_AUDIO, "advanced").toBool();
+  bool advanced = true;
   QString type = SettingsComponent::Get().value(SETTINGS_SECTION_AUDIO, "devicetype").toString();
 
   audioSection->setValueHidden("channels", false);