Remove unused requirements.txt

app/requirements.txt

@@ -1,45 +0,0 @@
-apache-libcloud==2.4.0
-applicationinsights==0.11.7
-colour==0.1.5
-chardet==3.0.4
-coverage==4.5.3
-dj-database-url==0.5.0
-Django==2.2.13
-django-cloud-browser==0.5.0
-django-cors-headers==3.1.1
-django-filter==2.0.0
-django-heroku==0.3.1
-django-mssql-backend==2.8.1
-django-webpack-loader==0.6.0
-django-widget-tweaks==1.4.2
-django-polymorphic==2.0.3
-django-rest-polymorphic==0.1.8
-djangorestframework==3.10
-djangorestframework-csv==2.1.0
-djangorestframework-filters==0.10.2
-drf-yasg==1.17.1
-environs==4.1.0
-djangorestframework-xml==1.4.0
-Faker==0.9.1
-flake8==3.6.0
-furl==2.0.0
-gunicorn==19.9.0
-lockfile==0.12.2
-model-mommy==1.6.0
-psycopg2-binary==2.8.6
-pyexcel==0.5.14
-pyexcel-xlsx==0.5.7
-python-dateutil==2.7.3
-pytz==2018.4
-PyJWT>=1.4.0,<2
-requests==2.21.0
-six==1.11.0
-seqeval==0.0.6
-social-auth-app-django==4.0.0
-social-auth-core[azuread,openidconnect]==3.3.3
-text-unidecode==1.2
-unittest-xml-reporting==2.5.1
-vcrpy==2.0.1
-vcrpy-unittest==0.1.7
-whitenoise[brotli]==4.1.2
-conllu==1.3.2