Remove @NonNull annotation in Consumer method parameter (#5447)
Remove @NonNull annotation in Consumer method parameter (#5447)

This fixes #5442
reactivex/rxjava,ReactiveX/RxJava,reactivex/rxjava,NiteshKant/RxJava,artem-zinnatullin/RxJava,akarnokd/RxJava,ReactiveX/RxJava,artem-zinnatullin/RxJava,NiteshKant/RxJava,akarnokd/RxJava