Remove more unused code in WebViewImpl

sky/engine/core/loader/EmptyClients.h

Index: sky/engine/core/loader/EmptyClients.h
diff --git a/sky/engine/core/loader/EmptyClients.h b/sky/engine/core/loader/EmptyClients.h
index cba0251da9b3491d57513b56319339d33c7b2929..6497ab6d5c5121f1a3fec6d8dca5103cc278ba00 100644
--- a/sky/engine/core/loader/EmptyClients.h
+++ b/sky/engine/core/loader/EmptyClients.h
@@ -82,8 +82,6 @@ public:
     virtual bool shouldReportDetailedMessageForSource(const String&) override { return false; }
     virtual void addMessageToConsole(LocalFrame*, MessageSource, MessageLevel, const String&, unsigned, const String&, const String&) override { }
 
-    virtual bool tabsToLinks() override { return false; }
-
     virtual void scheduleAnimation() override { }
 
     virtual IntRect rootViewToScreen(const IntRect& r) const override { return r; }