Martin von Zweigbergk <martinvonz@google.com> [Mon, 18 Jan 2021 22:32:09 -0800] rev 46355
simplemerge: delete unused find_unconflicted()
The function has been unused ever since it was introduced in
465b9ea02868 (Import 3-way merge code from bzr, 2007-04-16).
Differential Revision: https://phab.mercurial-scm.org/D9832