Log demotion

Demote a couple spammy messages to trace level.

llarp/dht/context.cpp

@@ -441,7 +441,7 @@ namespace llarp
     Context::CleanupTX()
     {
       auto now = Now();
-      llarp::LogDebug("DHT tick");
+      llarp::LogTrace("DHT tick");
 
       pendingRouterLookups().Expire(now);
       _pendingIntrosetLookups.Expire(now);

llarp/router/router.cpp

@@ -973,7 +973,7 @@ namespace llarp
       // don't purge bootstrap nodes from nodedb
       if (IsBootstrapNode(rc.pubkey))
       {
-        log::debug(logcat, "Not removing {}: is bootstrap node", rc.pubkey);
+        log::trace(logcat, "Not removing {}: is bootstrap node", rc.pubkey);
         return false;
       }
       // if for some reason we stored an RC that isn't a valid router