get rid of the callable constructors list.

lib/v8/portal.rb

@@ -133,14 +133,7 @@ module V8
       when ::Time
         C::Date::New(value.to_f * 1000)
       when ::Class
-        @embedded_constructors[value].GetFunction().tap do |f|
+        callable_js_constructor_for(value)
-          f.SetHiddenValue(C::String::NewSymbol("TheRubyRacer::RubyObject"), C::External::New(value))
-          #set the function's prototype object to the object that will have the named property handlers
-          prototype = rubytemplate.NewInstance()
-          #set *that* object's prototype to an empty function so that it will look and behave like a function.
-          prototype.SetPrototype(C::FunctionTemplate::New() {}.GetFunction())
-          f.SetPrototype(prototype)
-        end
       when nil,Numeric,TrueClass,FalseClass, C::Value
         value
       else