Martin von Zweigbergk <martinvonz@google.com> [Thu, 07 Feb 2019 09:40:37 -0800] rev 41626
subrepo: adjust subrepo prefix before calling subrepo.removefiles() (API)
That's what we do with the matcher so it seems more consistent.
Differential Revision: https://phab.mercurial-scm.org/D5882