Commented out an unnecessary using namespace statement.

--HG--
extra : convert_revision : svn%3Afdd8eb12-d10e-0410-9acb-85c331704f74/trunk%402769

dlib/matrix/matrix_blas_bindings.h

@@ -11,8 +11,8 @@
 
 #include "cblas.h"
 
-#include <iostream>
-using namespace std;
+//#include <iostream>
+//using namespace std;
 
 namespace dlib
 {