If all that makes this latest “Rodrick Rules” sound a bit redundant, the movie itself does little to suggest otherwise. Of course, none of the earlier “Wimpy Kid” movies were particularly great, but this animated retread, in which the gawky adolescent dweeb Greg (voiced by Brady Noon) must contend with the petulant foibles of his big brother, Rodrick (voiced by Hunter Dillon), feels distinctly insubstantial.
