Move print to corelib.

runtime/bin/main.cc

Index: runtime/bin/main.cc
diff --git a/runtime/bin/main.cc b/runtime/bin/main.cc
index 014ecd6cc54c02d12a65a647bc20c8219cda8cf1..ac86c67c68d5abd7e2417700ccc8b3a4da667620 100644
--- a/runtime/bin/main.cc
+++ b/runtime/bin/main.cc
@@ -470,9 +470,6 @@ static Dart_Handle LibraryTagHandler(Dart_LibraryTag tag,
                                  url,
                                  tag,
                                  url_string);
-  if (!Dart_IsError(result) && (tag == kImportTag)) {
-    Builtin::ImportLibrary(result, Builtin::kBuiltinLibrary);
-  }
   return result;
 }
 
@@ -636,8 +633,6 @@ static bool CreateIsolateAndSetupHelper(const char* script_uri,
     Dart_ShutdownIsolate();
     return false;
   }
-  // Implicitly import builtin into app.
-  Builtin::ImportLibrary(library, Builtin::kBuiltinLibrary);
   Dart_ExitScope();
   return true;
 }