Remove library_name

As the models aren't compatible with the Transformers library, this PR removes that tag.

Note, you can make your models compatible by converting the weights using the corresponding conversion scripts, e.g. [here](https://github.com/huggingface/transformers/blob/main/src/transformers/models/dinov2/convert_dinov2_to_hf.py) for DINOv2.

README.md

@@ -1,6 +1,7 @@
 ---
 license: cc-by-nc-sa-4.0
-library_name: transformers
+tags:
+- pytorch
 pipeline_tag: image-classification
 ---