chore: Remove unused files (#178)

tonic/src/transport/server/future copy.rs

@@ -1,25 +0,0 @@
-use pin_project::pin_project;
-use std::{
-    future::Future,
-    pin::Pin,
-    task::{Context, Poll},
-};
-
-#[pin_project]
-pub struct ResponseFuture<F> {
-    inner: F,
-    span: Option<Span>,
-}
-
-impl<F: Future> Future for ResponseFuture<F> {
-    type Output = F::Output;
-
-    fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
-        let me = self.project();
-
-        if let Some(span) = me.span.clone().take() {
-            let _enter = span.enter();
-            // me.poll(cx).map_err(Into::into)
-        }
-    }
-}

tonic/src/transport/server/future.rs

@@ -1,25 +0,0 @@
-use pin_project::pin_project;
-use std::{
-    future::Future,
-    pin::Pin,
-    task::{Context, Poll},
-};
-
-#[pin_project]
-pub struct ResponseFuture<F> {
-    inner: F,
-    span: Option<Span>,
-}
-
-impl<F: Future> Future for ResponseFuture<F> {
-    type Output = F::Output;
-
-    fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
-        let me = self.project();
-
-        if let Some(span) = me.span.clone().take() {
-            let _enter = span.enter();
-            // me.poll(cx).map_err(Into::into)
-        }
-    }
-}