Revert "优化服务退出流程，增加中间件文档"

This reverts commit c511a2e6b3.

server/internal/logic/hook/access_log.go

@@ -20,9 +20,9 @@ func (s *sHook) accessLog(r *ghttp.Request) {
 	if r.IsFileRequest() {
 		return
 	}
-
 	var ctx = contexts.Detach(r.Context())
-	if contexts.Get(ctx) == nil {
+	modelCtx := contexts.Get(ctx)
+	if modelCtx == nil {
 		return
 	}