Revert "Add ShouJian Zheng (@jianzs) as vLLM Ascend maintainer (#1203)"

This reverts commit 70864b6.

Author: wangxiaoxin (A)

docs/source/community/contributors.md

@@ -7,7 +7,6 @@
 | Xiyuan Wang| [@wangxiyuan](https://github.com/wangxiyuan) | 2025/01 |
 | Yikun Jiang| [@Yikun](https://github.com/Yikun) | 2025/02 |
 | Yi Gan| [@ganyi1996ppo](https://github.com/ganyi1996ppo) | 2025/02 |
-| Shoujian Zheng| [@jianzs](https://github.com/jianzs) | 2025/06 |
 
 ## Contributors