STYLE: prefer REGISTER/NO_REGISTER instead of true/false for IOobject

- self-documenting

applications/utilities/surface/surfaceMeshImport/surfaceMeshImport.C

@@ -200,7 +200,7 @@ int main(int argc, char *argv[])
                 runTime,
                 IOobject::MUST_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             args.getOrDefault<fileName>("dict", "")
         );