refactor: remove unnecessary whitespace in GoogleImageGenConfig

- Cleaned up the code by removing an extra blank line in the GoogleImageGenConfig class.
- This minor adjustment improves code readability without affecting functionality.

Signed-off-by: Ifta Khairul Alam Adil <ikaadil007@gmail.com>

litellm/llms/gemini/image_generation/transformation.py

@@ -88,7 +88,6 @@ class GoogleImageGenConfig(BaseImageGenerationConfig):
         
         Google AI API format: https://generativelanguage.googleapis.com/v1beta/models/{model}:predict
         """
-     
         complete_url: str = (
             api_base 
             or get_secret_str("GEMINI_API_BASE")