[bindings] Remove custom bindings required for Location.valueOf

Source/bindings/core/v8/custom/V8LocationCustom.cpp

-/*
- * Copyright (C) 2009 Google Inc. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met:
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- * notice, this list of conditions and the following disclaimer.
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- * this software without specific prior written permission.
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- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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- */
-
-#include "config.h"
-#include "bindings/core/v8/V8Location.h"
-
-namespace blink {
-
-void V8Location::valueOfMethodCustom(const v8::FunctionCallbackInfo<v8::Value>& info)
-{
-    // Just return the this object the way the normal valueOf function
-    // on the Object prototype would. The valueOf function is only
-    // added to make sure that it cannot be overwritten on location
-    // objects, since that would provide a hook to change the string
-    // conversion behavior of location objects.
-    v8SetReturnValue(info, info.This());
-}
-
-} // namespace blink