refactor(of): remove unused import (#5094)
refactor(of): remove unused import (#5094)

Remove unused import
ReactiveX/RxJS,benlesh/RxJS,kwonoj/RxJS,martinsik/rxjs,ReactiveX/RxJS,martinsik/rxjs,ReactiveX/rxjs,benlesh/RxJS,trxcllnt/RxJS,kwonoj/RxJS,ReactiveX/RxJS,ReactiveX/rxjs,benlesh/RxJS,ReactiveX/RxJS,kwonoj/RxJS,trxcllnt/RxJS,trxcllnt/RxJS,martinsik/rxjs,trxcllnt/RxJS,benlesh/RxJS,ReactiveX/rxjs,martinsik/rxjs,kwonoj/RxJS,ReactiveX/rxjs