Schedule 1 Form 1040 Blank

After finishing and printing fed tax return it included Schedule 1 but it is blank except line 1 shows $0.  Why did it print?  Do I need to send it?  Note: I have a W2 for NJ withholding and a separate W2 for PA withholding. I live in NJ and work in PA so the PA W2 shows $0  fed wages.