Martin von Zweigbergk <martinvonz@google.com> [Mon, 09 Dec 2019 10:43:04 -0800] rev 5005
evolve: remove obsolete backup of allowemptycommit config
We stopped setting the config in 88601e1cd5d8 (evolve: create new
commit while resolving content-divergence, 2018-04-23), so there's no
need to back it up.
Martin von Zweigbergk <martinvonz@google.com> [Mon, 09 Dec 2019 10:44:42 -0800] rev 5004
evolve: remove dead initilization of "newnode" variable
It's been dead since f9dad99a90d5 (evolve: create a new commit instead
of amending one of the divergents, 2018-06-13).