Remove `:' from group names.

annotating_by_label.py

@@ -115,7 +115,7 @@ def main():
     os.makedirs(bgnot_dir, exist_ok=True)
 
     for line in lines:
-        labels = [l.strip() for l in line.split(',') if l.strip()]
+        labels = [l.replace(":", "").strip() for l in line.split(',') if l.strip()]
         if not labels:
             continue