commit 8694a7799833a4543b1015916d34b4592de4d8d5
from: Sven M. Hallberg <pesco@khjk.org>
date: Thu Oct 26 10:02:58 2023 UTC

remove unneeded header

commit - abcddb8e72f5c457c9c679c3f7587af349087c51
commit + 8694a7799833a4543b1015916d34b4592de4d8d5
blob - 95a5cd48cc2122c9370e9087cbe18dda1699009c
blob + 12444d9775213e20b38f8a56d783d0dd5ce5ac2a
--- cw.c
+++ cw.c
@@ -10,7 +10,6 @@
 #include <sndio.h>
 #include <assert.h>
 #include <err.h>
-#include <unistd.h>	/* sleep() */
 #include "cw.h"
 
 /* sample type */