Can we get rid of `include/list.h`?

[AltraMayor]

Can't we drop include/list.h and use /usr/include/sys/queue.h instead? DPDK already uses the latter, and it comes from the C library:

$ dpkg -S /usr/include/sys/queue.h
libc6-dev-i386: /usr/include/sys/queue.h

There are no big gains in this issue, it's more about code cleanup.

[AltraMayor]

This issue should be addressed before we add coroutines to the GK block since the core around the coroutines will employ a list library.