[Webhook] Remove parameter setting method to GET.
[Webhook] Remove parameter setting method to GET.

(Duh)

Shawn-WangDapeng/trunk.cocoapods.org,billinghamj/trunk.cocoapods.org,CocoaPods/trunk.cocoapods.org,Shawn-WangDapeng/trunk.cocoapods.org,billinghamj/trunk.cocoapods.org,k0nserv/trunk.cocoapods.org,CocoaPods/trunk.cocoapods.org,k0nserv/trunk.cocoapods.org,k0nserv/trunk.cocoapods.org