Card: keep the arXiv badge only

README.md

@@ -39,7 +39,6 @@ Zirong Chen<sup>2</sup> &nbsp; Run Luo<sup>1,5,‡</sup> &nbsp; Tao Tan<sup>1</s
 
 <p align="center">
   <a href="https://videoarena-bench.github.io" style="display:inline-block;margin:2px;"><img src="https://img.shields.io/badge/Project-Page-1f6feb?style=for-the-badge&logo=googlechrome&logoColor=white" alt="Project Page" style="display:inline-block;vertical-align:middle;margin:0;"></a>
-  <a href="https://videoarena-bench.github.io/assets/paper.pdf" style="display:inline-block;margin:2px;"><img src="https://img.shields.io/badge/Paper-PDF-b31b1b?style=for-the-badge&logo=adobeacrobatreader&logoColor=white" alt="Paper" style="display:inline-block;vertical-align:middle;margin:0;"></a>
   <a href="https://videoarena-bench.github.io" style="display:inline-block;margin:2px;"><img src="https://img.shields.io/badge/arXiv-coming%20soon-lightgrey?style=for-the-badge&logo=arxiv&logoColor=white" alt="arXiv (coming soon)" style="display:inline-block;vertical-align:middle;margin:0;"></a>
   <a href="https://huggingface.co/datasets/THUSI-Lab/Video-Arena" style="display:inline-block;margin:2px;"><img src="https://img.shields.io/badge/%F0%9F%A4%97%20Dataset-THUSI--Lab%2FVideo--Arena-ffcc4d?style=for-the-badge" alt="Dataset" style="display:inline-block;vertical-align:middle;margin:0;"></a>
   <a href="https://www.apache.org/licenses/LICENSE-2.0" style="display:inline-block;margin:2px;"><img src="https://img.shields.io/badge/License-Apache%202.0-2ea44f?style=for-the-badge" alt="License: Apache 2.0" style="display:inline-block;vertical-align:middle;margin:0;"></a>