eliminate `torrent.swarm` usage
eliminate `torrent.swarm` usage

yciabaud/webtorrent,rom1504/webtorrent,webtorrent/webtorrent,jamesliu96/webtorrent,feross/webtorrent,yciabaud/webtorrent,jamesliu96/webtorrent,joshterrill/webtorrent,feross/webtorrent,joshterrill/webtorrent,arestov/webtorrent,webtorrent/webtorrent