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/fw/self-learning-strategy.cpp b/daemon/fw/self-learning-strategy.cpp
index 12e6176..f0eab59 100644
--- a/daemon/fw/self-learning-strategy.cpp
+++ b/daemon/fw/self-learning-strategy.cpp
@@ -27,7 +27,7 @@
 #include "algorithm.hpp"
 
 #include "core/logger.hpp"
-#include "core/global-io.hpp"
+#include "daemon/global.hpp"
 #include "rib/service.hpp"
 
 #include <ndn-cxx/lp/empty-value.hpp>