Revert of Add a row in the network tray to inform users to turn Bluetooth on to enable Tether.

ash/system/tray/tray_popup_item_style.cc

Index: ash/system/tray/tray_popup_item_style.cc
diff --git a/ash/system/tray/tray_popup_item_style.cc b/ash/system/tray/tray_popup_item_style.cc
index 97947db9203d7ca98ff4633c56507c055d262f55..f8037850eda938537170cd284baa19a6d7a34189 100644
--- a/ash/system/tray/tray_popup_item_style.cc
+++ b/ash/system/tray/tray_popup_item_style.cc
@@ -89,13 +89,6 @@
       label->SetFontList(base_font_list.Derive(1, gfx::Font::NORMAL,
                                                gfx::Font::Weight::NORMAL));
       break;
-    case FontStyle::CLICKABLE_SYSTEM_INFO:
-      label->SetFontList(base_font_list.Derive(1, gfx::Font::NORMAL,
-                                               gfx::Font::Weight::NORMAL));
-      label->SetEnabledColor(label->GetNativeTheme()->GetSystemColor(
-          ui::NativeTheme::kColorId_ProminentButtonColor));
-      label->SetAutoColorReadabilityEnabled(false);
-      break;
     case FontStyle::BUTTON:
       label->SetFontList(base_font_list.Derive(0, gfx::Font::NORMAL,
                                                gfx::Font::Weight::MEDIUM));