Get rid of the NONEXISTENT PropertyType

src/objects-printer.cc

Index: src/objects-printer.cc
diff --git a/src/objects-printer.cc b/src/objects-printer.cc
index 8fbe2182c51ea5b26bef050d3dca8d622ab10ae2..3d29164938183a78d612d55187c7e94596576d58 100644
--- a/src/objects-printer.cc
+++ b/src/objects-printer.cc
@@ -242,8 +242,6 @@ void JSObject::PrintProperties(OStream& os) {  // NOLINT
         case NORMAL:  // only in slow mode
         case HANDLER:  // only in lookup results, not in descriptors
         case INTERCEPTOR:  // only in lookup results, not in descriptors
-        // There are no transitions in the descriptor array.
-        case NONEXISTENT:
           UNREACHABLE();
           break;
       }
@@ -377,7 +375,6 @@ void JSObject::PrintTransitions(OStream& os) {  // NOLINT
         case NORMAL:
         case HANDLER:
         case INTERCEPTOR:
-        case NONEXISTENT:
           UNREACHABLE();
           break;
       }
@@ -1107,7 +1104,6 @@ void TransitionArray::PrintTransitions(OStream& os) {  // NOLINT
       case NORMAL:
       case HANDLER:
       case INTERCEPTOR:
-      case NONEXISTENT:
         UNREACHABLE();
         break;
     }