Remove unused function

src/main.rs

@@ -370,10 +370,6 @@ async fn page_not_found() -> Result<(StatusCode, Html<String>), Error> {
     ))
 }
 
-async fn error() -> Error {
-    Error::InternalError
-}
-
 pub static TEMPLATES: Lazy<Tera> =
     Lazy::new(|| Tera::new("templates/*.html").expect("Could not generate templates"));