Don't define __STRICT_ANSI__, we should build both with and without it.

For some reason, wxDialUpManager code defined __STRICT_ANSI__ itself, don't do
it as __STRICT_ANSI__ can be predefined by the compiler resulting in the
redefinition warnings and, in any case, our code should build both with and
without it.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@74728 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/unix/dialup.cpp

@@ -35,7 +35,6 @@
 #include <signal.h>
 #include <fcntl.h>
 #include <unistd.h>
-#define __STRICT_ANSI__
 #include <sys/socket.h>
 #include <netdb.h>
 #include <netinet/in.h>