[Refactor][1/N]diffusion/cache: cache-dit (#5226)

Signed-off-by: yangjianjuan <66548561+yangjianjuan@users.noreply.github.com>

vllm_omni/diffusion/worker/diffusion_model_runner.py

@@ -22,7 +22,7 @@ from vllm.config import LoadConfig, VllmConfig
 from vllm.logger import init_logger
 from vllm.utils.mem_utils import DeviceMemoryProfiler, GiB_bytes
 
-from vllm_omni.diffusion.cache.cache_dit_backend import cache_summary
+from vllm_omni.diffusion.cache.cachedit import cache_summary
 from vllm_omni.diffusion.cache.prompt_embed_cache import (
     install_prompt_embed_cache,
     resolve_prompt_embed_cache_config,