remove a couple of unnecessary header includes

client/fwknop.c

@@ -35,9 +35,6 @@
 #include "utils.h"
 #include "getpasswd.h"
 
-#include "digest.h"
-#include "rijndael.h"
-
 #include <sys/stat.h>
 #include <fcntl.h>
 

server/access.c

@@ -40,7 +40,6 @@
 #include "access.h"
 #include "utils.h"
 #include "log_msg.h"
-#include "rijndael.h"
 
 /* Add an access string entry
 */

server/incoming_spa.c

@@ -43,7 +43,6 @@
 #include "fw_util.h"
 #include "fwknopd_errors.h"
 #include "replay_cache.h"
-#include "rijndael.h"
 
 /* Validate and in some cases preprocess/reformat the SPA data.  Return an
  * error code value if there is any indication the data is not valid spa data.