Revert "Support for precise stepping in functions compiled before debugging was started (step 2)"

src/objects-inl.h

Index: src/objects-inl.h
diff --git a/src/objects-inl.h b/src/objects-inl.h
index 3b236d2059153c170bc152c89d64c425a1d58419..baf271fd94867acbd5482b016172d41dcdf5bbab 100644
--- a/src/objects-inl.h
+++ b/src/objects-inl.h
@@ -2996,21 +2996,6 @@ void Code::set_has_debug_break_slots(bool value) {
 }
 
 
-bool Code::is_compiled_optimizable() {
-  ASSERT(kind() == FUNCTION);
-  byte flags = READ_BYTE_FIELD(this, kFullCodeFlags);
-  return FullCodeFlagsIsCompiledOptimizable::decode(flags);
-}
-
-
-void Code::set_compiled_optimizable(bool value) {
-  ASSERT(kind() == FUNCTION);
-  byte flags = READ_BYTE_FIELD(this, kFullCodeFlags);
-  flags = FullCodeFlagsIsCompiledOptimizable::update(flags, value);
-  WRITE_BYTE_FIELD(this, kFullCodeFlags, flags);
-}
-
-
 int Code::allow_osr_at_loop_nesting_level() {
   ASSERT(kind() == FUNCTION);
   return READ_BYTE_FIELD(this, kAllowOSRAtLoopNestingLevelOffset);