Remove some unnecessary includes as well as simplifying exisiting ones if possible.

Source/Core/Common/Src/CDUtils.h

@@ -1,10 +1,8 @@
 #ifndef _CDUTILS_H_
 #define _CDUTILS_H_
 
-#include <stdlib.h>
 #include <vector>
 #include <string>
-#include <stdio.h>
 
 // Returns a pointer to an array of strings with the device names
 std::vector<std::string> cdio_get_devices();