Remove QueryStringMissing as it was no longer being used (#125)

* Remove `QueryStringMissing` as it was no longer being used

* remove it in a few more places

CHANGELOG.md

@@ -11,6 +11,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## Breaking changes
 
+- Remove `QueryStringMissing` as it was no longer being used
 - `extract::extractor_middleware::ExtractorMiddlewareResponseFuture` moved
   to `extract::extractor_middleware::future::ResponseFuture` ([#133](https://github.com/tokio-rs/axum/pull/133))
 - `routing::BoxRouteFuture` moved to `routing::future::BoxRouteFuture` ([#133](https://github.com/tokio-rs/axum/pull/133))

src/extract/rejection.rs

@@ -39,14 +39,6 @@ define_rejection! {
     pub struct HeadersAlreadyExtracted;
 }
 
-define_rejection! {
-    #[status = BAD_REQUEST]
-    #[body = "Query string was invalid or missing"]
-    #[deprecated(since = "0.1.3", note = "No longer used. See https://github.com/tokio-rs/axum/pull/117")]
-    /// Rejection type for [`Query`](super::Query).
-    pub struct QueryStringMissing;
-}
-
 define_rejection! {
     #[status = BAD_REQUEST]
     #[body = "Failed to parse the request body as JSON"]
@@ -216,7 +208,6 @@ composite_rejection! {
     /// can fail.
     pub enum QueryRejection {
         UriAlreadyExtracted,
-        QueryStringMissing,
         FailedToDeserializeQueryString,
     }
 }
@@ -228,7 +219,6 @@ composite_rejection! {
     /// can fail.
     pub enum FormRejection {
         InvalidFormContentType,
-        QueryStringMissing,
         FailedToDeserializeQueryString,
         FailedToBufferBody,
         BodyAlreadyExtracted,