message: Remove unused dependency on tokio-util
diff: @@ -26,7 +26,6 @@ serde_json = "1.0.79"
  serde_repr = "0.1.7"
  http = "0.2.7"
  tokio = { version = "1.16.1", features = ["full"] }
  -tokio-util = { version = "0.7.0", features = ["codec"] }
  itoa = "1"
  url = "2"
  tokio-rustls = "0.23"
  