Remove duplicate environment variable setup for Hugging Face cache

app.py

@@ -1,13 +1,12 @@
+import os
+os.environ["HF_HOME"] = "/tmp/huggingface"
+
 from flask import Flask, jsonify, request
 from flask_cors import CORS
 
 from model.sentiment import Sentiment
 from urllib.parse import unquote
 
-import os
-os.environ["HF_HOME"] = "/tmp/huggingface"
-os.environ["TRANSFORMERS_CACHE"] = "/tmp/huggingface"
-
 app = Flask(__name__)
 CORS(app)