Happy linter and comments

src/metabase/core.clj

@@ -37,7 +37,7 @@
 
 (def ^:private app
   "The primary entry point to the Ring HTTP server."
-  (-> #'routes/routes
+  (-> #'routes/routes                    ; the #' is to allow tests to redefine endpoints
       mb-middleware/log-api-call
       mb-middleware/add-security-headers ; Add HTTP headers to API responses to prevent them from being cached
       (wrap-json-body                    ; extracts json POST body and makes it avaliable on request

src/metabase/middleware.clj

@@ -393,11 +393,6 @@
               (throw e)))
           (recur (async/<!! output-queue)))))))
 
-(def ^:private ^:const streaming-response-keep-alive-interval-ms
-  "Interval between sending whitespace bytes to keep Heroku from terminating
-   requests like queries that take a long time to complete."
-  (* 1 1000))
-
 (defn streaming-json-response
   "This midelware assumes handlers fail early or return success
    Run the handler in a future and send newlines to keep the connection open