reactor: Remove unused epoll poller from reactor
reactor: Remove unused epoll poller from reactor

Signed-off-by: Pavel Emelyanov <c9a32589e048e044184536f7ac71ef92fe82df3e@scylladb.com>
Message-Id: <20210726140400.18744-1-c9a32589e048e044184536f7ac71ef92fe82df3e@scylladb.com>

scylladb/seastar,avikivity/seastar,scylladb/seastar,avikivity/seastar,avikivity/seastar,cloudius-systems/seastar,syuu1228/seastar,scylladb/seastar,cloudius-systems/seastar,syuu1228/seastar,cloudius-systems/seastar,syuu1228/seastar