fix: fix broken user auth for web API app

tailbone/app.py

@@ -25,19 +25,15 @@ Application Entry Point
 """
 
 import os
-import warnings
 
-import sqlalchemy as sa
 from sqlalchemy.orm import sessionmaker, scoped_session
 
 from wuttjamaican.util import parse_list
 
 from rattail.config import make_config
 from rattail.exceptions import ConfigurationError
-from rattail.db.types import GPCType
 
 from pyramid.config import Configurator
-from pyramid.authentication import SessionAuthenticationPolicy
 from zope.sqlalchemy import register
 
 import tailbone.db