core+daemon: eliminate scheduler::{schedule,cancel} wrappers

Also move core/global-io.hpp to daemon/global.hpp

Refs: #4528, #4883
Change-Id: I0b99029f1a19d7451aab57099cd3303b7eb42ff3
diff --git a/daemon/face/udp-factory.cpp b/daemon/face/udp-factory.cpp
index 6730389..2c8cf20 100644
--- a/daemon/face/udp-factory.cpp
+++ b/daemon/face/udp-factory.cpp
@@ -26,7 +26,7 @@
 #include "udp-factory.hpp"
 #include "generic-link-service.hpp"
 #include "multicast-udp-transport.hpp"
-#include "core/global-io.hpp"
+#include "daemon/global.hpp"
 
 #include <boost/range/adaptor/map.hpp>
 #include <boost/range/algorithm/copy.hpp>