[nit] Ignore trunk delete return code as it always return error (#125)
[nit] Ignore trunk delete return code as it always return error (#125)

force merge as this is only testable in post submit script
grpc/grpc-ios,grpc/grpc-ios,grpc/grpc-ios,grpc/grpc-ios,grpc/grpc-ios,grpc/grpc-ios,grpc/grpc-ios,grpc/grpc-ios,grpc/grpc-ios,grpc/grpc-ios,grpc/grpc-ios,grpc/grpc-ios