Fixes errno.h problems

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@10276 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/os2/utils.cpp

@@ -35,30 +35,6 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-//
-// already defined via nerror.h in app.h so undef them
-//
-#ifdef EEXIST
-#undef EEXIST
-#endif
-#ifdef ENOENT
-#undef ENOENT
-#endif
-#ifdef EMFILE
-#undef EMFILE
-#endif
-#ifdef EINTR
-#undef EINTR
-#endif
-#ifdef EINVAL
-#undef EINVAL
-#endif
-#ifdef ENOMEM
-#undef ENOMEM
-#endif
-#ifdef EACCES
-#undef EACCES
-#endif
 #include <errno.h>
 #include <stdarg.h>