Need to update the header for vtysh_read_file

Author: tjcw

vtysh/vtysh_config.c

@@ -492,7 +492,7 @@ static int vtysh_read_file(FILE *confp, int output_fileno)
 }
 
 /* Read up configuration file from config_default_dir. */
-int vtysh_read_config(const char *config_default_dir, int output_fileno)
+int vtysh_read_config(const char *config_default_dir)
 {
 	FILE *confp = NULL;
 	int ret;