Remove unused imports and clean up code structure across multiple files

src/transformers/transformers.py

@@ -13,7 +13,7 @@ from loguru import logger as log
 
 logger = log
 logger.remove()
-logger.add("logs/application.log", rotation="1 week", enqueue=True)
+logger.add("logs/application.log", rotation="1 week", retention="1 month", enqueue=True)
 log.add(
     "logs/transformers.log",
     enqueue=True,