### What this PR does / why we need it?
This PR performs a cleanup and update of the patch mechanism in
`vllm-ascend`.
- Removes several obsolete patches: `patch_deepseek.py`.
- Updates the central patch documentation in
`vllm_ascend/patch/__init__.py` to reflect these removals and additions,
re-numbering and re-organizing the patch list for better clarity.
### Does this PR introduce _any_ user-facing change?
No. These are internal changes to the patching mechanism and should not
affect users.
### How was this patch tested?
CI passed with new added/existing test.
- vLLM version: v0.15.0
- vLLM main:
83b47f67b1
Signed-off-by: wangxiyuan <wangxiyuan1007@gmail.com>
532f7a82f2