Revert "reenable instrumentation on GET /about"

This reverts commit 5118e4b.

Author: milt

src/dev/mem_lrs/server.cljc

@@ -104,7 +104,8 @@
            lrs/authorize-async
 
            ;; response handling
-           com.yetanalytics.lrs.pedestal.routes.about/get-response
+           ;; TODO: fix this instrumentation for xapi version
+           #_com.yetanalytics.lrs.pedestal.routes.about/get-response
            com.yetanalytics.lrs.pedestal.routes.activities/get-response
            com.yetanalytics.lrs.pedestal.routes.agents/get-response
            com.yetanalytics.lrs.pedestal.routes.documents/put-response