As an imprisoned bank robber, lawyer Warren J. Gladders was unlikely to practice law. But the Illinois Supreme Court prevented him from doing that here this month by suspending his law license indefinitely. Gladders, who was a licensed lawyer in both Illinois and Missouri, pleaded guilty last year to robbing three Missouri banks and a charge related to shooting a Missouri state trooper. Those convictions are the basis of a disciplinary complaint filed last year by the Attorney Registration & Disciplinary …