Remove unused line from .gitignore
Remove unused line from .gitignore

YuichiNukiyama/tslint,IllusionMH/tslint,mprobst/tslint,nchen63/tslint,IllusionMH/tslint,mprobst/tslint,andy-hanson/tslint,YuichiNukiyama/tslint,IllusionMH/tslint,RyanCavanaugh/tslint,RyanCavanaugh/tslint,andy-ms/tslint,berickson1/tslint,nchen63/tslint,JoshuaKGoldberg/tslint,berickson1/tslint,YuichiNukiyama/tslint,RyanCavanaugh/tslint,JoshuaKGoldberg/tslint,nchen63/tslint,palantir/tslint,palantir/tslint,mprobst/tslint,andy-ms/tslint,andy-hanson/tslint,berickson1/tslint,andy-ms/tslint,andy-hanson/tslint,JoshuaKGoldberg/tslint,palantir/tslint