Revert "Reapply "Eliminate dependencies on assemblers and code stubs in precompiled runtime.""

runtime/vm/constant_propagator.cc

Index: runtime/vm/constant_propagator.cc
diff --git a/runtime/vm/constant_propagator.cc b/runtime/vm/constant_propagator.cc
index 7fe14fa89105a9f36baee0e0ee85317943376d2a..51d19f377cf6a3086ae497a4dfb3bd9d2922982c 100644
--- a/runtime/vm/constant_propagator.cc
+++ b/runtime/vm/constant_propagator.cc
@@ -2,8 +2,6 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-#if !defined(DART_PRECOMPILED_RUNTIME)
-
 #include "vm/constant_propagator.h"
 
 #include "vm/bit_vector.h"
@@ -1586,5 +1584,3 @@ void ConstantPropagator::Transform() {
 }
 
 }  // namespace dart
-
-#endif  // !defined(DART_PRECOMPILED_RUNTIME)