[strong] Remove all remainders of strong mode

src/objects-printer.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/objects.h"
 
 #include "src/disasm.h"
 #include "src/disassembler.h"
 #include "src/interpreter/bytecodes.h"
 #include "src/objects-inl.h"
@@ skipping 1288 matching lines @@
       os << "(transition to non-extensible)";
     } else if (key == heap->sealed_symbol()) {
       os << "(transition to sealed)";
     } else if (key == heap->frozen_symbol()) {
       os << "(transition to frozen)";
     } else if (key == heap->elements_transition_symbol()) {
       os << "(transition to " << ElementsKindToString(target->elements_kind())
          << ")";
     } else if (key == heap->strict_function_transition_symbol()) {
       os << " (transition to strict function)";
-    } else if (key == heap->strong_function_transition_symbol()) {
-      os << " (transition to strong function)";
     } else if (key == heap->observed_symbol()) {
       os << " (transition to Object.observe)";
     } else {
       PropertyDetails details = GetTargetDetails(key, target);
       os << "(transition to ";
       if (details.location() == kDescriptor) {
         os << "immutable ";
       }
       os << (details.kind() == kData ? "data" : "accessor");
       if (details.location() == kDescriptor) {
@@ skipping 11 matching lines @@
 void JSObject::PrintTransitions(std::ostream& os) {  // NOLINT
   Object* transitions = map()->raw_transitions();
   int num_transitions = TransitionArray::NumberOfTransitions(transitions);
   if (num_transitions == 0) return;
   os << "\n - transitions";
   TransitionArray::PrintTransitions(os, transitions, false);
 }
 #endif  // defined(DEBUG) || defined(OBJECT_PRINT)
 }  // namespace internal
 }  // namespace v8