Always clean up leftovers at ci.rvm.jp
to prevent failures like http://ci.rvm.jp/logfiles/brlog.trunk-mjit.20201126-182515.
Since fa1250a506e9b6a1bcbf664f6b7b9c06e045d9b9, it should be safe to do this.
Added by k0kubun (Takashi Kokubun) almost 5 years ago
Always clean up leftovers at ci.rvm.jp
to prevent failures like
http://ci.rvm.jp/logfiles/brlog.trunk-mjit.20201126-182515.
Since fa1250a506e9b6a1bcbf664f6b7b9c06e045d9b9, it should be safe to do
this.