The much ballyhooed film Suicide Squad is being blamed for stalling traffic downtown. And it is. But the closure of commercial streets anywhere in the City for an over-the-to-top fantasy like a helicopter into a transit bus (above) usually does another thing — it devastates business for retailers and others who rely on walk-in traffic. For small retailers, it can wipe out a week’s receipts. This shooting is on Yonge Street between Queen to College Monday, Tuesday and Wednesday So movie shoots no doubt leave some money behind with freelancer film specialists and some hotels. But it takes a great deal of money out of the pockets of retailers