formatter: remove now-unnecessary check for file-ness
`templater.templatepath()` now returns non-`None` only for files, so
the caller doesn't have to check.
Differential Revision: https://phab.mercurial-scm.org/D8805
--- a/mercurial/formatter.py Thu Jul 23 22:47:55 2020 -0700
+++ b/mercurial/formatter.py Thu Jul 23 22:50:20 2020 -0700
@@ -584,7 +584,7 @@
mapname = templater.templatepath(
b'map-cmdline.' + tmpl
) or templater.templatepath(tmpl)
- if mapname and os.path.isfile(mapname):
+ if mapname:
return templatespec(topic, None, mapname)
# perhaps it's a reference to [templates]