remove unused dependencies

requirements.txt

@@ -1,16 +1,10 @@
-Babel==2.7.0
-Click==7.0
 Flask==1.1.1
-Flask-Babel==0.12.2
 Flask-WTF==0.14.2
 itsdangerous==1.1.0
 Jinja2==2.10.3
 kerberos==1.3.0
 MarkupSafe==1.1.1
-pyasn1==0.4.7
-pyasn1-modules==0.2.7
 python-ldap==3.2.0
-pytz==2019.3
 uWSGI==2.0.18
 Werkzeug==0.16.0
 WTForms==2.2.1

webapp/__init__.py

@@ -3,8 +3,6 @@ import flask_wtf
 import wtforms
 from functools import reduce
 
-from flask_babel import gettext
-
 app = flask.Flask(__name__)
 
 # import views to route them