remove unused request_path_to_breadcrumb_display

Signed-off-by: Brian S. Stephan <bss@incorporeal.org>

incorporealcms/markdown.py

@@ -192,10 +192,3 @@ def generate_parent_navs(path, pages_root: str):
             return generate_parent_navs(parent_resource_path, pages_root) + [(page_name, request_path)]
         except FileNotFoundError:
             return generate_parent_navs(parent_resource_path, pages_root) + [(request_path, request_path)]
-
-
-def request_path_to_breadcrumb_display(path):
-    """Given a request path, e.g. "/foo/bar/baz/", turn it into breadcrumby text "baz"."""
-    undired = path.rstrip('/')
-    leaf = undired[undired.rfind('/'):]
-    return leaf.strip('/')