prune: remove unused unistd.h #include

Gitlab: #2204

diff --git a/contrib/prune/prune.c b/contrib/prune/prune.c
index 159969b26041af4a54f721367b9340d20d5a31c2..b8722ebadc8bf89b341f37fba09cefc3b3a0cabe 100644 (file)
--- a/contrib/prune/prune.c
+++ b/contrib/prune/prune.c
@@ -8,12 +8,7 @@
  * Contributors: Details at http://www.graphviz.org/
  *************************************************************************/
 
-#include "config.h"
-
 #include <stdio.h>
-#ifndef _WIN32
-#include <unistd.h>
-#endif
 #include <stdlib.h>
 #include <string.h>
 #include <ctype.h>