Remove outdated PWC badges from README

Removed outdated PWC badges from README.

Author: lucas-ventura

README.md

@@ -18,10 +18,6 @@
 [![License](https://img.shields.io/badge/License-MIT-green.svg)]()
 [![GitHub Stars](https://img.shields.io/github/stars/lucas-ventura/CoVR?style=social)](https://github.com/lucas-ventura/CoVR)
 
-[![PWC](https://img.shields.io/endpoint.svg?url=https://paperswithcode.com/badge/covr-learning-composed-video-retrieval-from/composed-video-retrieval-covr-on-covr)](https://paperswithcode.com/sota/composed-video-retrieval-covr-on-covr?p=covr-learning-composed-video-retrieval-from) <br/>
-[![PWC](https://img.shields.io/endpoint.svg?url=https://paperswithcode.com/badge/covr-learning-composed-video-retrieval-from/zero-shot-composed-image-retrieval-zs-cir-on-1)](https://paperswithcode.com/sota/zero-shot-composed-image-retrieval-zs-cir-on-1?p=covr-learning-composed-video-retrieval-from) <br/>
-[![PWC](https://img.shields.io/endpoint.svg?url=https://paperswithcode.com/badge/covr-learning-composed-video-retrieval-from/zero-shot-composed-image-retrieval-zs-cir-on-2)](https://paperswithcode.com/sota/zero-shot-composed-image-retrieval-zs-cir-on-2?p=covr-learning-composed-video-retrieval-from)
-
 ![CoVR teaser gif](tools/examples/teaser.gif)
 
 </div>