Update requirements.txt

requirements.txt

@@ -1,7 +1,3 @@
-flask==2.0.1
-werkzeug==2.0.2
-flask-cors==3.0.10
-beautifulsoup4==4.11.2
-requests==2.28.2
-cssutils==2.6.0
-playwright==1.47.0
+fastapi==0.115.0
+uvicorn==0.30.6
+pdf2json==0.7.0