[Refactor] refactor patch module (#3555)

### What this PR does / why we need it?
we notice that `patch_main` is never used. Usually the patch is for all
version. And if it's for specified version, we can use `vllm_version_is`
instead. So let's remove the useless sub folder in patch module to make
it clear.


- vLLM version: v0.11.0rc3
- vLLM main: https://github.com/vllm-project/vllm/commit/v0.11.0

Signed-off-by: wangxiyuan <wangxiyuan1007@gmail.com>

vllm_ascend/patch/worker/patch_triton.py

@@ -0,0 +1,16 @@
+import vllm.model_executor.layers.fla.ops.chunk
+import vllm.model_executor.layers.fla.ops.fused_recurrent
+import vllm.model_executor.layers.fla.ops.layernorm_guard
+import vllm.model_executor.layers.mamba.ops.causal_conv1d
+
+from vllm_ascend.ops.casual_conv1d import (causal_conv1d_fn,
+                                           causal_conv1d_update_npu)
+from vllm_ascend.ops.fla import LayerNormFn, torch_chunk_gated_delta_rule
+from vllm_ascend.ops.sigmoid_gating import \
+    fused_recurrent_gated_delta_rule_fwd_kernel
+
+vllm.model_executor.layers.mamba.ops.causal_conv1d.causal_conv1d_update = causal_conv1d_update_npu
+vllm.model_executor.layers.mamba.ops.causal_conv1d.causal_conv1d_fn = causal_conv1d_fn
+vllm.model_executor.layers.fla.ops.fused_recurrent.fused_recurrent_gated_delta_rule_fwd_kernel = fused_recurrent_gated_delta_rule_fwd_kernel
+vllm.model_executor.layers.fla.ops.layernorm_guard.LayerNormFn = LayerNormFn
+vllm.model_executor.layers.fla.ops.chunk.chunk_gated_delta_rule = torch_chunk_gated_delta_rule