tree: remove unused funcion

generate-html-tree.py

@@ -26,19 +26,6 @@ def classify_commit(fs_dict, commit):
             partial_dict[entry][1] += 1
             partial_dict = partial_dict[entry][0]
 
-def upstream_status(status):
-    if not status:
-        return ""
-
-    if status == "upstream":
-        ret = '<span class="badge badge-pill badge-success m-1">'
-    else:
-        ret = '<span class="badge badge-pill badge-warning m-1">'
-    
-    ret += status + '</span>'
-
-    return ret
-
 def generate_html(repo, fs_dict, title, cmd, head):
     file_loader = FileSystemLoader('templates')
     env = Environment(loader=file_loader)