A Cook County judge will no longer hear cases after the Cook County Circuit Court’s Executive Committee alleged she allowed a law clerk to sit on the bench, wear her robes and adjudicate cases.Circuit Judge Valarie E. Turner was reassigned to desk duty on Wednesday while the committee of presiding judges conducts a further investigation.Turner is accused of allowing Rhonda Crawford, a law clerk with the court, to adjudicate at least two cases in her courtroom while wearing her robes on Aug. 11.In a special order from …