remove mapping funtion from Moya.Method to Alamofire.Method
remove mapping funtion from Moya.Method to Alamofire.Method

The method was not being used so we can remove it

skywinder/Moya,justinmakaila/Moya,jasl/Moya,esttorhe/Moya,callam/Moya,colinta/Moya,Moya/Moya,AvdLee/Moya,Moya/Moya,ashfurrow/Moya,petester42/Moya,jasl/MoyaX,filograno/Moya,callam/Moya,justinmakaila/Moya,leonereveel/Moya,calt/Moya,wattson12/Moya,AvdLee/Moya,esttorhe/Moya,AvdLee/Moya,petester42/Moya,skywinder/Moya,leonereveel/Moya,wattson12/Moya,Moya/Moya,filograno/Moya,ashfurrow/Moya,calt/Moya,justinmakaila/Moya,calt/Moya,jasl/Moya,colinta/Moya,jasl/MoyaX