Update accelerate

Signed-off-by: Jael Gu <mengjia.gu@zilliz.com>

auto_transformers.py

@@ -23,7 +23,11 @@ from transformers import AutoTokenizer, AutoModel, AutoModelForMaskedLM, AutoMod
 
 from towhee.operator import NNOperator
 from towhee import register
-# from towhee.dc2 import accelerate
+try:
+    from towhee import accelerate
+except:
+    def accelerate(func):
+        return func
 
 import warnings
 import logging