test: add tests for client.remove
test: add tests for client.remove

For #287

nicola/webtorrent,beni55/webtorrent,ngjermundshaug/webtorrent,adriagalin/webtorrent,serafinfernandez/webtorrent,solderzzc/webtorrent,arestov/webtorrent,yciabaud/webtorrent,ngjermundshaug/webtorrent,serafinfernandez/webtorrent,loon3/webtorrent,nicola/webtorrent,feross/webtorrent,dan-hill/webtorrent,joshterrill/webtorrent,rom1504/webtorrent,FabianFrancoRoldan/webtorrent,karissa/webtorrent,solderzzc/webtorrent,ericwooley/webtorrent,webtorrent/webtorrent,jakefb/webtorrent,joshterrill/webtorrent,whitef0x0/webtorrent,MiracleBlue/webtorrent,madmarks/webtorrent,loon3/webtorrent,fisch0920/webtorrent,whitef0x0/webtorrent,adriagalin/webtorrent,LinusU/webtorrent,beni55/webtorrent,ericwooley/webtorrent,sideffect0/webtorrent,rozifus/webtorrent,MiracleBlue/webtorrent,dan-hill/webtorrent,jamesliu96/webtorrent,gillesdemey/webtorrent,LinusU/webtorrent,feross/webtorrent,karissa/webtorrent,akiva/webtorrent,madmarks/webtorrent,Stiveknx/webtorrent,FabianFrancoRoldan/webtorrent,akiva/webtorrent,jamesliu96/webtorrent,Stiveknx/webtorrent,sideffect0/webtorrent,webtorrent/webtorrent,lucamaraschi/webtorrent,rozifus/webtorrent,yciabaud/webtorrent,lucamaraschi/webtorrent,jakefb/webtorrent,fisch0920/webtorrent,gillesdemey/webtorrent