Where a single action was used as the basis for both an aggravated battery conviction and the element of force required for a robbery conviction, one of the convictions must be vacated under the one-act, one-crime rule.The 1st District Appellate Court affirmed in part and vacated in part a decision by Cook County Associate Judge Michele M. Pitman.Jerry Brown and Stevie Smith were arrested after attacking and robbing William Burtner, a 65-year-old commander of a Veteran of Foreign Wars post.As Burtner was approaching the …