Remove unnecessary generic type parameters for delaySubscription methods in Single (#5511)
Remove unnecessary generic type parameters for delaySubscription methods in Single (#5511)


akarnokd/RxJava,ReactiveX/RxJava,reactivex/rxjava,ReactiveX/RxJava,artem-zinnatullin/RxJava,akarnokd/RxJava,NiteshKant/RxJava,artem-zinnatullin/RxJava,NiteshKant/RxJava,reactivex/rxjava