[Ash MD] Remove some non-MD code from HoverHighlightView

ash/common/system/chromeos/audio/audio_detailed_view.cc

Index: ash/common/system/chromeos/audio/audio_detailed_view.cc
diff --git a/ash/common/system/chromeos/audio/audio_detailed_view.cc b/ash/common/system/chromeos/audio/audio_detailed_view.cc
index b1ecca5f6394f6f78931909499fb8188b1f39539..3fee3b223e66e72681d466ce58cfc3692cf7d1f9 100644
--- a/ash/common/system/chromeos/audio/audio_detailed_view.cc
+++ b/ash/common/system/chromeos/audio/audio_detailed_view.cc
@@ -138,7 +138,7 @@ HoverHighlightView* AudioDetailedView::AddScrollListItem(
   HoverHighlightView* container = new HoverHighlightView(this);
 
   if (MaterialDesignController::IsSystemTrayMenuMaterial()) {
-    container->AddLabelRowMd(text);
+    container->AddLabelRow(text);
     if (checked) {
       gfx::ImageSkia check_mark = gfx::CreateVectorIcon(
           gfx::VectorIconId::CHECK_CIRCLE, gfx::kGoogleGreen700);
@@ -150,8 +150,6 @@ HoverHighlightView* AudioDetailedView::AddScrollListItem(
       container->SetAccessiblityState(
           HoverHighlightView::AccessibilityState::UNCHECKED_CHECKBOX);
     }
-  } else {
-    container->AddCheckableLabel(text, highlight, checked);
   }
 
   scroll_content()->AddChildView(container);