feat(lib): remove stream cargo feature (#2896)

Closes #2855

benches/body.rs

@@ -6,7 +6,7 @@ extern crate test;
 use bytes::Buf;
 use futures_util::stream;
 use futures_util::StreamExt;
-use hyper::body::Body;
+use http_body_util::StreamBody;
 
 macro_rules! bench_stream {
     ($bencher:ident, bytes: $bytes:expr, count: $count:expr, $total_ident:ident, $body_pat:pat, $block:expr) => {{
@@ -20,9 +20,10 @@ macro_rules! bench_stream {
 
         $bencher.iter(|| {
             rt.block_on(async {
-                let $body_pat = Body::wrap_stream(
+                let $body_pat = StreamBody::new(
                     stream::iter(__s.iter()).map(|&s| Ok::<_, std::convert::Infallible>(s)),
                 );
+
                 $block;
             });
         });

benches/server.rs

@@ -9,10 +9,11 @@ use std::sync::mpsc;
 use std::time::Duration;
 
 use futures_util::{stream, StreamExt};
+use http_body_util::StreamBody;
 use tokio::sync::oneshot;
 
 use hyper::service::{make_service_fn, service_fn};
-use hyper::{Body, Response, Server};
+use hyper::{Response, Server};
 
 macro_rules! bench_server {
     ($b:ident, $header:expr, $body:expr) => {{
@@ -101,7 +102,7 @@ fn throughput_fixedsize_large_payload(b: &mut test::Bencher) {
 fn throughput_fixedsize_many_chunks(b: &mut test::Bencher) {
     bench_server!(b, ("content-length", "1000000"), || {
         static S: &[&[u8]] = &[&[b'x'; 1_000] as &[u8]; 1_000] as _;
-        Body::wrap_stream(stream::iter(S.iter()).map(|&s| Ok::<_, String>(s)))
+        StreamBody::new(stream::iter(S.iter()).map(|&s| Ok::<_, String>(s)))
     })
 }
 
@@ -123,7 +124,7 @@ fn throughput_chunked_large_payload(b: &mut test::Bencher) {
 fn throughput_chunked_many_chunks(b: &mut test::Bencher) {
     bench_server!(b, ("transfer-encoding", "chunked"), || {
         static S: &[&[u8]] = &[&[b'x'; 1_000] as &[u8]; 1_000] as _;
-        Body::wrap_stream(stream::iter(S.iter()).map(|&s| Ok::<_, String>(s)))
+        StreamBody::new(stream::iter(S.iter()).map(|&s| Ok::<_, String>(s)))
     })
 }