Remove copy of BSD sys/queue.h

We are now requiring libbsd-dev, which provides sys/queue.h.
Therefore there is no longer a need to have our own copy
of the code in libdispatch.

Since we are relying on libbsd-dev we can get queue.h from it

Signed-off-by: Daniel A. Steffen <[email protected]>

Author: dgrove-oss

src/internal.h

@@ -214,8 +214,6 @@ DISPATCH_EXPORT DISPATCH_NOTHROW void dispatch_atfork_child(void);
 #include <sys/time.h>
 #include <sys/mman.h>
 #include <netinet/in.h>
-#else
-#include "sys_queue.h"
 #endif
 
 #ifdef __BLOCKS__