Fixup includes

Signed-off-by: Jens Axboe <axboe@kernel.dk>
diff --git a/fio.c b/fio.c
index 8a79ebe..be60c5f 100644
--- a/fio.c
+++ b/fio.c
@@ -22,19 +22,8 @@
  *
  */
 #include <unistd.h>
-#include <fcntl.h>
-#include <string.h>
-#include <limits.h>
-#include <signal.h>
-#include <time.h>
 #include <locale.h>
-#include <assert.h>
 #include <time.h>
-#include <sys/stat.h>
-#include <sys/wait.h>
-#include <sys/ipc.h>
-#include <sys/shm.h>
-#include <sys/mman.h>
 
 #include "fio.h"
 #include "hash.h"
diff --git a/libfio.c b/libfio.c
index 76a36a6..668df45 100644
--- a/libfio.c
+++ b/libfio.c
@@ -23,6 +23,8 @@
  */
 
 #include <string.h>
+#include <sys/types.h>
+#include <signal.h>
 #include "fio.h"
 
 /*