ruff fixes

Author: Fabien Coelho

implementations/c-jsu/bowtie_jsu_compile.py

@@ -9,17 +9,16 @@
 """
 
 from pathlib import Path
-import dotenv
 import hashlib
 import json
-import os
 import platform
 import shutil
 import subprocess
 import sys
 import traceback
 
 from jsonschema_specifications import REGISTRY
+import dotenv
 
 type JsonObject = dict[str, Json]
 type JsonArray = list[Json]