Remove unused imports across multiple modules

Cleaned up various files by removing unused or redundant import statements to improve code readability and reduce potential confusion. No functional changes were made.

src/chat/utils/utils_image.py

@@ -12,7 +12,6 @@ from PIL import Image
 from rich.traceback import install
 
 from src.common.logger import get_logger
-from src.common.database.database import db
 from src.common.database.sqlalchemy_models import Images, ImageDescriptions
 from src.config.config import global_config, model_config
 from src.llm_models.utils_model import LLMRequest