Remove Yoshi charger recall pop up warning UI code.

chrome/common/pref_names.cc

Index: chrome/common/pref_names.cc
diff --git a/chrome/common/pref_names.cc b/chrome/common/pref_names.cc
index fef44779b79ca13b332ad69b47dcb3361f7a20a7..f3224a80e8bed8a107469bec0d96f7301a613bf7 100644
--- a/chrome/common/pref_names.cc
+++ b/chrome/common/pref_names.cc
@@ -480,18 +480,6 @@ const char kAudioMute[] = "settings.audio.mute";
 // |kAudioDevicesVolumePercent| setting.
 const char kAudioVolumePercent[] = "settings.audio.volume_percent";
 
-// An integer pref to record user's spring charger check result.
-// 0 - unknown charger, not checked yet.
-// 1 - confirmed safe charger.
-// 2 - confirmed original charger and declined to order new charger.
-// 3 - confirmed original charger and ordered new charger online.
-// 4 - confirmed original charger and ordered new charger by phone.
-// 5 - confirmed original charger, ordered a new one online, but continue to use
-//     the old one.
-// 6 - confirmed original charger, ordered a new one by phone, but continue to
-//     use the old one.
-const char kSpringChargerCheck[] = "settings.spring_charger.check_result";
-
 // A boolean pref set to true if touchpad tap-to-click is enabled.
 const char kTapToClickEnabled[] = "settings.touchpad.enable_tap_to_click";