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

src/objects-debug.cc

Index: src/objects-debug.cc
diff --git a/src/objects-debug.cc b/src/objects-debug.cc
index 626ff00931a3be3841bc5b216aff90279875e35d..d64c8f979f16757fb9e82c89a95a1af2b823eaa4 100644
--- a/src/objects-debug.cc
+++ b/src/objects-debug.cc
@@ -931,7 +931,6 @@ void Script::ScriptVerify() {
   VerifyPointer(name());
   line_offset()->SmiVerify();
   column_offset()->SmiVerify();
-  VerifyPointer(data());
   VerifyPointer(wrapper());
   type()->SmiVerify();
   VerifyPointer(line_ends());