Revise console logging in Ref app

Use Os::Log instead of custom implementation

Ref/Top/Main.cpp

@@ -2,7 +2,7 @@
 #include <cstdlib>
 #include <ctype.h>
 
-#include "Fw/Logger/Logger.hpp"
+#include <Os/Log.hpp>
 #include <Ref/Top/RefTopologyAc.hpp>
 
 void print_usage(const char* app) {
@@ -12,33 +12,9 @@ void print_usage(const char* app) {
 #include <signal.h>
 #include <cstdio>
 
-class Logger :
-  public Fw::Logger
-{
-
-    public:
-
-        void log(
-            const char* fmt,
-            POINTER_CAST a0 = 0,
-            POINTER_CAST a1 = 0,
-            POINTER_CAST a2 = 0,
-            POINTER_CAST a3 = 0,
-            POINTER_CAST a4 = 0,
-            POINTER_CAST a5 = 0,
-            POINTER_CAST a6 = 0,
-            POINTER_CAST a7 = 0,
-            POINTER_CAST a8 = 0,
-            POINTER_CAST a9 = 0
-        ) {
-          printf(fmt, a0, a1, a2, a3, a4, a5, a6, a7, a8, a9);
-          fflush(stdout);
-        }
-
-};
-
 Ref::TopologyState state;
-Logger logger;
+// Enable the console logging provided by Os::Log
+Os::Log logger;
 
 volatile sig_atomic_t terminate = 0;
 
@@ -96,8 +72,6 @@ int main(int argc, char* argv[]) {
         }
     }
 
-    Fw::Logger::registerLogger(&logger);
-
     (void) printf("Hit Ctrl-C to quit\n");
 
     state = Ref::TopologyState(hostname, port_number);