[Core] Cleanup triton patch which has been fixed in vllm (#764)

### What this PR does / why we need it?
- Revert "Re-patch TritonPlaceholder on main to make CI happy (#753)"
because upstream main CI already merged:
https://github.com/vllm-project/vllm/pull/17446
- Keep 0.8.5.post1 compatible

### Does this PR introduce _any_ user-facing change?
No

### How was this patch tested?
CI passed

---------

Signed-off-by: Yikun Jiang <yikunkero@gmail.com>

vllm_ascend/patch/__init__.py

@@ -158,15 +158,4 @@
 #       - https://github.com/vllm-project/vllm-ascend/pull/395
 #    Future Plan:
 #       Revert it when the related pr is merged in vllm and vllm-ascend.
-#
-# ** File: worker/patch_main/patch_tritonplaceholder.py **
-# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-#   1. `triton` Module
-#    Why:
-#       Triton is not supported on npu currently, importing triton will break vllm-ascend
-#    How：
-#       ditto
-#    Related PR (if no, explain why): vllm haven't support yet
-#       TritonPlaceholder is only available in vllm>0.8.5.post1
-#    Future Plan:
-#       https://github.com/vllm-project/vllm/pull/17446
+#