Remove Script::SetData and the script_data parameter from Script::(Compile|New).

src/accessors.cc

Index: src/accessors.cc
diff --git a/src/accessors.cc b/src/accessors.cc
index 47b0a856332e24cec0b4ff7e8ab0666d20ca9dc2..9bc728d3116f4349dc1fd4bcfb42003aa292d382 100644
--- a/src/accessors.cc
+++ b/src/accessors.cc
@@ -351,26 +351,6 @@ const AccessorDescriptor Accessors::ScriptColumnOffset = {
 
 
 //
-// Accessors::ScriptData
-//
-
-
-MaybeObject* Accessors::ScriptGetData(Isolate* isolate,
-                                      Object* object,
-                                      void*) {
-  Object* script = JSValue::cast(object)->value();
-  return Script::cast(script)->data();
-}
-
-
-const AccessorDescriptor Accessors::ScriptData = {
-  ScriptGetData,
-  IllegalSetter,
-  0
-};
-
-
-//
 // Accessors::ScriptType
 //