No, you should not cut off drooping Calathea leaves. The leaves may droop due to various reasons, such as being too dry or too wet. If you cut off the leaves, you may damage the plant and make it harder for the Calathea to recover. Try watering the plant more often if it seems to be drooping due to being too dry. If the leaves are drooping due to being too wet, try waiting a few days before watering the plant again. You can also place the Calathea in a location where it will receive less sunlight until the leaves stop drooping.