Revert "Make sharded checkpoints work in offline mode"

This reverts commit 3564c657.

src/transformers/utils/hub.py

@@ -552,9 +552,8 @@ def get_from_cache(
                 # the models might've been found if local_files_only=False
                 # Notify the user about that
                 if local_files_only:
-                    fname = url.split("/")[-1]
-                    raise EntryNotFoundError(
-                        f"Cannot find the requested file ({fname}) in the cached path and outgoing traffic has been"
+                    raise FileNotFoundError(
+                        "Cannot find the requested files in the cached path and outgoing traffic has been"
                         " disabled. To enable model look-ups and downloads online, set 'local_files_only'"
                         " to False."
                     )