net/http: fix comment TimeoutHandler no longer supports Flusher

Fixes #35161
Updates #34439

Change-Id: I978534cbb8b9fb32c115dba0066cf099c61d8ee9
GitHub-Last-Rev: d60581635e8cefb7cfc4b571057542395034c575
GitHub-Pull-Request: golang/go#35162
Reviewed-on: https://go-review.googlesource.com/c/go/+/203478Reviewed-by: Bryan C. Mills <bcmills@google.com>
Run-TryBot: Bryan C. Mills <bcmills@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>

src/net/http/server.go

@@ -3182,8 +3182,8 @@ func (srv *Server) onceSetNextProtoDefaults() {
 // After such a timeout, writes by h to its ResponseWriter will return
 // ErrHandlerTimeout.
 //
-// TimeoutHandler supports the Flusher and Pusher interfaces but does not
-// support the Hijacker interface.
+// TimeoutHandler supports the Pusher interface but does not support
+// the Hijacker or Flusher interfaces.
 func TimeoutHandler(h Handler, dt time.Duration, msg string) Handler {
 	return &timeoutHandler{
 		handler: h,