remove some testing changes

Author: MarkRich

src/diffusers/pipeline_utils.py

@@ -52,7 +52,7 @@
 
 
 INDEX_FILE = "diffusion_pytorch_model.bin"
-CUSTOM_PIPELINE_FILE_NAME = "imagic_stable_diffusion.py"
+CUSTOM_PIPELINE_FILE_NAME = "pipeline.py"
 DUMMY_MODULES_FOLDER = "diffusers.utils"