New Yorkers are scrambling to buy required but tough-to-find official trash cans or face a fine — but the only company allowed to make the bins has already left town. A former worker at Otto Environmental Systems told The Post the company shut down its New York operation after City Hall axed its request to hike prices for the branded “NYC Bins.” Meanwhile, thousands of residents have complained that they paid for the $50 bins but still haven’t received them. “The volumes that were spoken about within the contract the city wrote did not come to fruition,” the ex-employee, who...