remove unnecessary execv prototype

This is unused in Graphviz. Related to #1998.

diff --git a/lib/sfio/sfhdr.h b/lib/sfio/sfhdr.h
index d88c1ce8d2e08c2f550351832153d1a689c94586..edf555fcb95cdacb5aab73c0b5d212e760128453 100644 (file)
--- a/lib/sfio/sfhdr.h
+++ b/lib/sfio/sfhdr.h
@@ -599,7 +599,6 @@ extern "C" {
     extern int access(const char *, int);
     extern uint sleep(uint);
     extern int execl(const char *, const char *, ...);
-    extern int execv(const char *, char **);
 
 #endif /*HAVE_UNISTD_H*/
 #endif /* _WIN32 */