test_client: Remove redundant status() fn

This returns the same as the `status()` fn of the inner `response`, so we might as well take advantage of the `Deref` implementation.

axum/src/test_helpers/test_client.rs

@@ -1,10 +1,7 @@
 use super::{serve, Request, Response};
 use bytes::Bytes;
 use futures_util::future::BoxFuture;
-use http::{
-    header::{HeaderName, HeaderValue},
-    StatusCode,
-};
+use http::header::{HeaderName, HeaderValue};
 use std::ops::Deref;
 use std::{convert::Infallible, future::IntoFuture, net::SocketAddr};
 use tokio::net::TcpListener;
@@ -171,10 +168,6 @@ impl TestResponse {
         self.response.json().await.unwrap()
     }
 
-    pub(crate) fn status(&self) -> StatusCode {
-        StatusCode::from_u16(self.response.status().as_u16()).unwrap()
-    }
-
     pub(crate) fn headers(&self) -> http::HeaderMap {
         self.response.headers().clone()
     }