Add Body::from_stream (#1848)

axum/src/body/mod.rs

@@ -1,9 +1,5 @@
 //! HTTP body utilities.
 
-mod stream_body;
-
-pub use self::stream_body::StreamBody;
-
 #[doc(no_inline)]
 pub use http_body::{Body as HttpBody, Empty, Full};
 

axum/src/test_helpers/mod.rs

@@ -9,6 +9,5 @@ pub(crate) mod tracing_helpers;
 
 pub(crate) fn assert_send<T: Send>() {}
 pub(crate) fn assert_sync<T: Sync>() {}
-pub(crate) fn assert_unpin<T: Unpin>() {}
 
 pub(crate) struct NotSendSync(*const ());