publish_model.py: drop max_workers (not in the Kaggle image's Hub client)

build/publish_model.py

@@ -325,8 +325,11 @@ def main():
     if todo:
         for i in range(0, len(todo), 120):        # one commit per 120 files: E-033's rate ceiling
             b = todo[i:i + 120]
+            # `max_workers` is accepted by the Hub client on this workspace but not in the Kaggle image,
+            # where it raised TypeError and killed the first publish attempt (E-007's class: an API that
+            # exists locally and not in the job). Default concurrency is fine for a 7-file repo.
             api.upload_folder(repo_id=a.repo, folder_path=src, path_in_repo="",
-                              allow_patterns=b, max_workers=2, repo_type="model",
+                              allow_patterns=b, repo_type="model",
                               commit_message=f"publish weights: batch {i // 120 + 1} of {len(b)} file(s)")
     back = set(api.list_repo_files(repo_id=a.repo, repo_type="model"))
     missing = sorted({f for f, _ in up} - back)