Removed unused RunInTmpDirMixin.rmfile().
Unused since
@@ -59,7 +59,3 @@ class RunInTmpDirMixin:
if os.path.commonprefix([self.test_dir, os.path.abspath(dname)]) != self.test_dir:
return
shutil.rmtree(dname)
-
- def rmfile(self, filepath):
- if os.path.exists(filepath):
- os.remove(filepath)
