remove _ListenerMixin, which provides dubious value (#22268)
* remove _ListenerMixin, which provides dubious value * remove trailing whitespace
Y
Yegor committed
f16d005d6652403fe0a10123ad64320e2a2eae46
Parent: 6b94e6b
Committed by GitHub <noreply@github.com>
on 9/26/2018, 4:30:45 PM