Removes unneeded include from main.c

src/main.c

@@ -1,10 +1,10 @@
 #include <stdio.h>
+#include <string.h>
 #include <unistd.h>
 #include <errno.h>
 #include <fcntl.h>
 #include <termios.h>
 
-#include "cbor.h"
 #include "image.h"
 #include "termios_util.h"