sim: formally assume unistd.h always exists (via gnulib)

We have many uses of unistd.h that are unprotected by HAVE_UNISTD_H,
so this is more formalizing the reality that we require this header.
Since we switched to gnulib, it guarantees that a unistd.h exists
for us to include, so we're doubly OK.

1 files changed, 0 insertions, 2 deletions

diff --git a/sim/rl78/main.c b/sim/rl78/main.c
index 7c250f7..1eafa33 100644
--- a/sim/rl78/main.c
+++ b/sim/rl78/main.c
@@ -25,9 +25,7 @@
 #include <stdio.h>
 #include <string.h>
 #include <stdlib.h>
-#ifdef HAVE_UNISTD_H
 #include <unistd.h>
-#endif
 #include <assert.h>
 #include <setjmp.h>
 #include <signal.h>