Super tiny mixin cleanup
Super tiny mixin cleanup

joshcartme/riot,thepian/riot,marcioj/riot,txchen/riotjs,daemonchen/riotjs,duongphuhiep/riot,qrb/riotjs,mike-ward/riot,dp-lewis/riot,noodle-learns-programming/riot,seedtigo/riot,crisward/riot,tao-zeng/riot,davidmarkclements/riot,tao-zeng/riot,mike-ward/riot,xtity/riot,rthbound/riot,thepian/riot,zawsx/js-lib-webcomponents-react-riot,joshcartme/riot,muut/riotjs,chetanism/riot,dschnare/riot,duongphuhiep/riot,crisward/riot,baysao/riot,chetanism/riot,stonexer/riot,noodle-learns-programming/riot,zawsx/js-lib-webcomponents-react-riot,scalabl3/riot,beni55/riot,laomu1988/riot,madlordory/riot,scalabl3/riot,marcioj/riot,seedtigo/riot,sylvainpolletvillard/riot,qrb/riotjs,baysao/riot,rthbound/riot,AndrewSwerlick/riot,txchen/riotjs,laomu1988/riot,xtity/riot,sylvainpolletvillard/riot,davidmarkclements/riot,muut/riotjs,madlordory/riot,rasata/riot,dp-lewis/riot,dschnare/riot,daemonchen/riotjs,AndrewSwerlick/riot,rasata/riot,stonexer/riot,beni55/riot