set log level of too-old-data message to debug (#16663)

database/rrdset.c

@@ -1718,8 +1718,7 @@ void rrdset_timed_done(RRDSET *st, struct timeval now, bool pending_rrdset_next)
     // check if we will re-write the entire data set
     if(unlikely(dt_usec(&st->last_collected_time, &st->last_updated) > st->db.entries * update_every_ut &&
                 st->rrd_memory_mode != RRD_MEMORY_MODE_DBENGINE)) {
-        netdata_log_info(
-            "'%s': too old data (last updated at %"PRId64".%"PRId64", last collected at %"PRId64".%"PRId64"). "
+        nd_log_daemon(NDLP_DEBUG, "'%s': too old data (last updated at %" PRId64 ".%" PRId64 ", last collected at %" PRId64 ".%" PRId64 "). "
             "Resetting it. Will not store the next entry.",
             rrdset_id(st),
             (int64_t)st->last_updated.tv_sec,