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/emoji_system/emoji_manager.py

@@ -13,7 +13,6 @@ from typing import Optional, Tuple, List, Any
 from PIL import Image
 from rich.traceback import install
 from sqlalchemy import select
-from src.common.database.database import db
 from src.common.database.sqlalchemy_database_api import get_db_session
 from src.common.database.sqlalchemy_models import Emoji, Images
 from src.common.logger import get_logger