Views: Remove reduntant Button::ConfigureDefaultFocus calls.

ash/shell/lock_view.cc

Index: ash/shell/lock_view.cc
diff --git a/ash/shell/lock_view.cc b/ash/shell/lock_view.cc
index cd6a5b466eb294e4390eb9dc790073364d45814a..f8754249873f4ab3b122ab853f98f11dc70d2c9e 100644
--- a/ash/shell/lock_view.cc
+++ b/ash/shell/lock_view.cc
@@ -30,8 +30,6 @@ class LockView : public views::WidgetDelegateView,
                                   this, base::ASCIIToUTF16("Unlock"))) {
     unlock_button_->SetStyle(views::Button::STYLE_BUTTON);
     AddChildView(unlock_button_);
-    views::Button::ConfigureDefaultFocus(unlock_button_);
-    unlock_button_->set_request_focus_on_press(true);
   }
   ~LockView() override {}