Removed pkg-resources from requirements.

Since that should be deleted from requirements. pip freeze adds it, but it should be there

requirements.txt

@@ -6,7 +6,6 @@ importlib-metadata==4.11.4
 itsdangerous==2.1.2
 Jinja2==3.1.2
 MarkupSafe==2.1.1
-pkg-resources==0.0.0
 SQLAlchemy==1.4.37
 typing-extensions==4.2.0
 Werkzeug==2.1.2