Update image_upscaling.py

image_upscaling.py

@@ -3,14 +3,9 @@ import numpy as np
 import torch
 
 from transformers.tools.base import Tool, get_default_device
-from transformers.utils import (
-    is_accelerate_available,
-    is_diffusers_available,
-)
-
+from transformers.utils import is_accelerate_available
 
-if is_diffusers_available():
-    from diffusers import DiffusionPipeline
+from diffusers import DiffusionPipeline
 
 
 IMAGE_UPSCALING_DESCRIPTION = (
@@ -29,8 +24,6 @@ class ImageUpscalingTool(Tool):
     def __init__(self, device=None, controlnet=None, stable_diffusion=None, **hub_kwargs) -> None:
         if not is_accelerate_available():
             raise ImportError("Accelerate should be installed in order to use tools.")
-        if not is_diffusers_available():
-            raise ImportError("Diffusers should be installed in order to use the StableDiffusionTool.")
 
         super().__init__()