Remove unnecessary include

CHANGELOG.md

@@ -6,6 +6,7 @@ WebSocket:
 
 * Control callback is invoked on the execution context
 * Add stream_fwd.hpp
+* Remove unnecessary include
 
 --------------------------------------------------------------------------------
 

include/boost/beast/websocket/stream.hpp

@@ -39,16 +39,10 @@
 #include <limits>
 #include <type_traits>
 
-#include <boost/asio/io_context.hpp> // DEPRECATED
-
 namespace boost {
 namespace beast {
 namespace websocket {
 
-namespace detail {
-class frame_test;
-}
-
 /// The type of object holding HTTP Upgrade requests
 using request_type = http::request<http::empty_body>;
 
@@ -72,6 +66,10 @@ enum class frame_type
     pong
 };
 
+namespace detail {
+class frame_test;
+} // detail
+
 //--------------------------------------------------------------------
 
 /** Provides message-oriented functionality using WebSocket.