Update app.py

Get rid of launch_gradio, change return type to str

app.py

@@ -5,7 +5,6 @@ import pytz
 import yaml
 from tools.final_answer import FinalAnswerTool
 from PIL import Image
-from transformers import launch_gradio_demo
 
 
 launch_gradio_demo(TextToImageTool)
@@ -56,7 +55,7 @@ def get_current_time_in_timezone(timezone: str) -> str:
         return f"Error fetching time for timezone '{timezone}': {str(e)}"
 
 @tool
-def generate_image(description: str) -> Image:
+def generate_image(description: str) -> str:
     """A tool that generates an image from a text description.
     Args:
         description: A string representing the text description to generate an image of.
@@ -69,7 +68,7 @@ def generate_image(description: str) -> Image:
     # image_generation_tool = load_tool("agents-course/text-to-image", trust_remote_code=True)
     image = image_generation_tool(description)
     # return f"Image generated for prompt: {description}."
-    return launch_gradio_demo(image)
+    return image