remove required key word

caosdb-webui @ 8c43e0ed

-Subproject commit 88566d42a698e939832fbff535a04fb5f12eec6b
+Subproject commit 8c43e0ed13d4e2baf34b80ac2e98d0494e3272a3

scripting/bin/xls_from_csv.py

@@ -93,8 +93,7 @@ def _parse_arguments():
                         help="Temporary dir for saving the result.")
     parser.add_argument('-a', '--auth-token', required=False,
                         help="An authentication token (not needed, only for compatibility).")
-    parser.add_argument('tsv', required=True,
-                        help="The tsv file.")
+    parser.add_argument('tsv', help="The tsv file.")
     return parser.parse_args()
 
 def main():