Remove unneeded bounds on S in FromRequest(Parts) implementations

This doesn't actually allow using non-Send or non-Sync state types, but
it makes the docs simpler.

axum-extra/src/extract/cached.rs

@@ -141,15 +141,12 @@ mod tests {
         struct Extractor(Instant);
 
         #[async_trait]
-        impl<S> FromRequestParts<S> for Extractor
-        where
-            S: Send + Sync,
-        {
+        impl<S> FromRequestParts<S> for Extractor {
             type Rejection = Infallible;
 
             async fn from_request_parts(
                 _parts: &mut Parts,
-                _state: &S,
+                _: &S,
             ) -> Result<Self, Self::Rejection> {
                 COUNTER.fetch_add(1, Ordering::SeqCst);
                 Ok(Self(Instant::now()))

axum-extra/src/extract/cookie/mod.rs

@@ -89,13 +89,10 @@ pub struct CookieJar {
 }
 
 #[async_trait]
-impl<S> FromRequestParts<S> for CookieJar
-where
-    S: Send + Sync,
-{
+impl<S> FromRequestParts<S> for CookieJar {
     type Rejection = Infallible;
 
-    async fn from_request_parts(parts: &mut Parts, _state: &S) -> Result<Self, Self::Rejection> {
+    async fn from_request_parts(parts: &mut Parts, _: &S) -> Result<Self, Self::Rejection> {
         Ok(Self::from_headers(&parts.headers))
     }
 }

axum-extra/src/extract/form.rs

@@ -5,7 +5,7 @@ use axum::{
         rejection::{FailedToDeserializeQueryString, FormRejection, InvalidFormContentType},
         FromRequest,
     },
-    BoxError,
+    BoxError, RequestExt,
 };
 use bytes::Bytes;
 use http::{header, HeaderMap, Method, Request};
@@ -61,11 +61,10 @@ where
     B: HttpBody + Send + 'static,
     B::Data: Send,
     B::Error: Into<BoxError>,
-    S: Send + Sync,
 {
     type Rejection = FormRejection;
 
-    async fn from_request(req: Request<B>, state: &S) -> Result<Self, Self::Rejection> {
+    async fn from_request(req: Request<B>, _: &S) -> Result<Self, Self::Rejection> {
         if req.method() == Method::GET {
             let query = req.uri().query().unwrap_or_default();
             let value = serde_html_form::from_str(query)
@@ -76,7 +75,7 @@ where
                 return Err(InvalidFormContentType::default().into());
             }
 
-            let bytes = Bytes::from_request(req, state).await?;
+            let bytes: Bytes = req.extract().await?;
             let value = serde_html_form::from_bytes(&bytes)
                 .map_err(FailedToDeserializeQueryString::__private_new)?;
 

axum-extra/src/extract/query.rs

@@ -62,11 +62,10 @@ pub struct Query<T>(pub T);
 impl<T, S> FromRequestParts<S> for Query<T>
 where
     T: DeserializeOwned,
-    S: Send + Sync,
 {
     type Rejection = QueryRejection;
 
-    async fn from_request_parts(parts: &mut Parts, _state: &S) -> Result<Self, Self::Rejection> {
+    async fn from_request_parts(parts: &mut Parts, _: &S) -> Result<Self, Self::Rejection> {
         let query = parts.uri.query().unwrap_or_default();
         let value = serde_html_form::from_str(query)
             .map_err(FailedToDeserializeQueryString::__private_new)?;

axum-extra/src/extract/with_rejection.rs

@@ -154,15 +154,12 @@ mod tests {
         struct TestRejection;
 
         #[async_trait]
-        impl<S> FromRequestParts<S> for TestExtractor
-        where
-            S: Send + Sync,
-        {
+        impl<S> FromRequestParts<S> for TestExtractor {
             type Rejection = ();
 
             async fn from_request_parts(
                 _parts: &mut Parts,
-                _state: &S,
+                _: &S,
             ) -> Result<Self, Self::Rejection> {
                 Err(())
             }