Cleveland will be without veteran linebacker for rest of the season after Walker suffered a torn quad tendon on Thursday night. The Cleveland Browns will be without starting linebacker Anthony Walker Jr. for the rest of the season after Walker suffered a torn quad tendon in his left leg on Thursday night. The Browns confirmed what everyone who saw the injury feared on Friday after head coach Kevin Stefanski had already met with the media. LB Anthony Walker Jr. has been ruled out for the season due to a torn quad tendon suffered last night — Cleveland Browns (@Browns) September…