Remove logging of each Timer firing

It just adds noise and you can't really tell which timer it is
anyway without more logging in other places.
diff --git a/common/rfb/Timer.cxx b/common/rfb/Timer.cxx
index 5f8ac89..5f9c6f2 100644
--- a/common/rfb/Timer.cxx
+++ b/common/rfb/Timer.cxx
@@ -101,7 +101,6 @@
   while (pending.front()->isBefore(now)) {
     Timer* timer = pending.front();
     pending.pop_front();
-    vlog.debug("handleTimeout(%p)", timer);
     if (timer->cb->handleTimeout(timer)) {
       timer->dueTime = addMillis(timer->dueTime, timer->timeoutMs);
       if (timer->isBefore(now)) {