Update by review

Author: aisk

Modules/posixmodule.c

@@ -219,7 +219,6 @@
 #  if defined(MS_WINDOWS_DESKTOP) || defined(MS_WINDOWS_SYSTEM)
 #    define HAVE_SYMLINK
 #  endif /* MS_WINDOWS_DESKTOP | MS_WINDOWS_SYSTEM */
-extern int winerror_to_errno(int);
 #endif