Move rimraf to devDependencies (#1661)
Move rimraf to devDependencies (#1661)


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