Remove the unnecessary docs

src/dispatching/error_handler.rs

@@ -1,7 +1,4 @@
 //! Error handlers.
-//!
-//! Looks quite strange for now, but with stabilised asynchronous traits it
-//! should be prettier.
 
 // Infallible used here instead of `!` to be compatible with rust <1.41.
 use std::{convert::Infallible, fmt::Debug, future::Future, pin::Pin};

src/dispatching/handler.rs

@@ -13,9 +13,6 @@ pub trait Handler<T, E> {
 
 /// The implementation of `Handler` for `Fn(U) -> Future<Output = Result<(),
 /// E>>`.
-///
-/// Looks quite strange for now, but with stabilised asynchronous traits it
-/// should be prettier.
 impl<T, E, F, Fut> Handler<T, E> for F
 where
     F: Fn(T) -> Fut,