[Perf][DreamZero] Remove redundant CUDA compile guard (#6983)

Signed-off-by: MikeyDong1 <xdong-1219@outlook.com>

vllm_omni/diffusion/models/dreamzero/pipeline_dreamzero.py

@@ -1,5 +1,5 @@
 # SPDX-License-Identifier: Apache-2.0
-# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM-Omni project
 
 """DreamZero pipeline for vllm-omni.
 
@@ -658,10 +658,6 @@ class DreamZeroPipeline(nn.Module, CFGParallelMixin):
         Wan ``feat_cache`` mutation is incompatible with CUDAGraph capture.
         DiT blocks use per-block ``fullgraph=True``.
         """
-        if not torch.cuda.is_available():
-            logger.info("DreamZero setup_compile skipped: CUDA not available.")
-            return
-
         from vllm_omni.diffusion.models.dreamzero.wan_vae_feat_cache_patch import (
             apply_wan_vae_feat_cache_tensor_patch,
         )