message: Drop the libgit2 User-Agent testing from http_auth_offered
diff: @@ -16,7 +16,7 @@ fn http_auth_offered() {
  let addr = server.local_addr().unwrap();
  fn headers(rdr: &mut BufRead) -> HashSet<String> {
  - let valid = ["GET", "Authorization", "Accept", "User-Agent"];
  + let valid = ["GET", "Authorization", "Accept"];
  rdr.lines()
  .map(|s| s.unwrap())
  .take_while(|s| s.len() > 2)
  @@ -28,7 +28,6 @@ fn http_auth_offered() {
  let t = thread::spawn(move || {
  let mut conn = BufStream::new(server.accept().unwrap().0);
  let req = headers(&mut conn);
  - let user_agent = "User-Agent: git/2.0 (libgit2 0.27.0)";
  conn.write_all(
  b"\
  HTTP/1.1 401 Unauthorized\r\n\
  @@ -41,7 +40,6 @@ fn http_auth_offered() {
  vec![
  "GET /foo/bar/info/refs?service=git-upload-pack HTTP/1.1",
  "Accept: */*",
  - user_agent,
  ].into_iter()
  .map(|s| s.to_string())
  .collect()
  @@ -63,7 +61,6 @@ fn http_auth_offered() {
  "GET /foo/bar/info/refs?service=git-upload-pack HTTP/1.1",
  "Authorization: Basic Zm9vOmJhcg==",
  "Accept: */*",
  - user_agent,
  ].into_iter()
  .map(|s| s.to_string())
  .collect()
  