refactor(FastMap): remove unused variable, update styles
refactor(FastMap): remove unused variable, update styles

ReactiveX/rxjs,gluck/RxJS,elliotschi/rxjs,figueredo/RxJS,saneyuki/RxJS,staltz/RxJSNext,Igorbek/rxjs5,justinwoo/RxJS,jayphelps/rxjs,jinroh/RxJS,kwonoj/RxJS,trxcllnt/RxJS,adrianomelo/RxJSNext,kwonoj/RxJS,trxcllnt/RxJS,jadbox/RxJS,benlesh/RxJS,martinsik/rxjs,robwormald/RxJS,staltz/RxJSNext,jinroh/RxJS,RxJS-CN/RxJS-Docs-CN,SangKa/RxJS-Docs-CN,gluck/RxJS,staltz/RxJSNext,jinroh/RxJS,ReactiveX/rxjs,jayphelps/rxjs,elliotschi/rxjs,jayphelps/rxjs,RxJS-CN/RxJS-Docs-CN,SangKa/RxJS-Docs-CN,staltz/RxJSNext,RxJS-CN/RxJS-Docs-CN,figueredo/RxJS,ReactiveX/RxJS,mattpodwysocki/RxJS,gluck/RxJS,adrianomelo/RxJSNext,Brocco/RxJS,benlesh/RxJS,adrianomelo/RxJS-1,martinsik/rxjs,kwonoj/RxJS,Brocco/RxJS,mattpodwysocki/RxJS,jayphelps/rxjs,IgorMinar/RxJS,ReactiveX/rxjs,robwormald/RxJS,jayphelps/rxjs,ReactiveX/rxjs,mattpodwysocki/RxJS,kwonoj/RxJS,adrianomelo/RxJSNext,trxcllnt/RxJS,SangKa/RxJS-Docs-CN,ReactiveX/RxJS,martinsik/rxjs,benlesh/RxJS,martinsik/rxjs,adrianomelo/RxJS-1,elliotschi/rxjs,ReactiveX/RxJS,trxcllnt/RxJS,robwormald/RxJS,figueredo/RxJS,figueredo/RxJS,adrianomelo/RxJSNext,justinwoo/RxJS,jinroh/RxJS,Igorbek/rxjs5,elliotschi/rxjs,saneyuki/RxJS,jadbox/RxJS,IgorMinar/RxJS,SangKa/RxJS-Docs-CN,adrianomelo/RxJS-1,justinwoo/RxJS,robwormald/RxJS,justinwoo/RxJS,jadbox/RxJS,jadbox/RxJS,adrianomelo/RxJS-1,mattpodwysocki/RxJS,Brocco/RxJS,Igorbek/rxjs5,RxJS-CN/RxJS-Docs-CN,ReactiveX/RxJS,Brocco/RxJS,gluck/RxJS,Igorbek/rxjs5,benlesh/RxJS