[trac855] with asio 1.4.8, the recent inclusion should not be needed

tests/tools/badpacket/scan.cc

@@ -21,10 +21,6 @@
 
 #include <config.h>
 
-// on sunstudio, asio.hpp needs unistd.h for pipe() to be defined
-#ifdef HAVE_UNISTD_H
-#include <unistd.h>
-#endif
 #include <asio.hpp>
 
 #include <asiolink/io_address.h>