Remove includes of <cinttypes>

Instead of including <cinttypes> directly, zm_define.h should be used
to get the typedef'ed types as well.

src/zm_monitor.cpp

@@ -21,7 +21,6 @@
 #include <sys/stat.h>
 #include <arpa/inet.h>
 #include <glob.h>
-#include <cinttypes>
 
 #include "zm.h"
 #include "zm_db.h"