Amani Toomer Says Stop Blaming Eli Manning, The Giants O-Line’s BAD!

New York Giants legend Amani Toomer tells TMZ Sports the problem in NY ain't Eli Manning ... it's his trash O-line!!! Of course ... Amani's biased -- dude is rockin' a Super Bowl ring these days 'cause of Eli's heroics in SB XLII -- but he swears…