remove unused State variant

actix-http/src/h1/dispatcher.rs

@@ -127,8 +127,6 @@ where
     ExpectCall(#[pin] X::Future),
     ServiceCall(#[pin] S::Future),
     SendPayload(#[pin] ResponseBody<B>),
-    // A special state hinting the state should not be updated.
-    NoOp,
 }
 
 impl<S, B, X> State<S, B, X>
@@ -444,9 +442,6 @@ where
                     }
                     continue;
                 }
-                StateProj::NoOp => {
-                    unreachable!("State::NoOp is only used in handle_request method")
-                }
             };
 
             this = self.as_mut().project();