cocoa browser: remove non-MD location bar support

chrome/browser/ui/cocoa/location_bar/translate_decoration.mm

Index: chrome/browser/ui/cocoa/location_bar/translate_decoration.mm
diff --git a/chrome/browser/ui/cocoa/location_bar/translate_decoration.mm b/chrome/browser/ui/cocoa/location_bar/translate_decoration.mm
index 455ca6c345bbdc707c1560c0ce6e16e01892b614..983ad820901a8a5d95726cc2ba4a3f2edb7a41aa 100644
--- a/chrome/browser/ui/cocoa/location_bar/translate_decoration.mm
+++ b/chrome/browser/ui/cocoa/location_bar/translate_decoration.mm
@@ -20,11 +20,6 @@
 TranslateDecoration::~TranslateDecoration() {}
 
 void TranslateDecoration::SetLit(bool on, bool location_bar_is_dark) {
-  if (!ui::MaterialDesignController::IsModeMaterial()) {
-    const int image_id = on ? IDR_TRANSLATE_ACTIVE : IDR_TRANSLATE;
-    SetImage(OmniboxViewMac::ImageForResource(image_id));
-    return;
-  }
   SetImage(GetMaterialIcon(location_bar_is_dark));
 }