Remove TLS error type

Author: link2xt

src/error.rs

@@ -38,9 +38,6 @@ pub enum Error {
     /// IO error
     #[error("io: {0}")]
     Io(#[from] io::Error),
-    /// TLS error
-    #[error("tls: {0}")]
-    Tls(#[from] async_native_tls::Error),
     /// Parsing error
     #[error("parsing: {0:?}")]
     Parsing(nom::error::ErrorKind),