Remove unused dependencies

Author: mikhailsidorov

app/requirements/base.txt

@@ -28,7 +28,6 @@ Mako==1.0.7
 MarkupSafe==1.1.0
 mccabe==0.6.1
 psycopg2==2.9.1
-psycopg2-binary==2.9.1
 Pygments==2.7.4
 PyJWT==1.5.3
 pylint==1.8.2
@@ -39,7 +38,6 @@ pytz==2018.3
 redis==2.10.6
 requests==2.20.0
 rq==0.12
-six==1.11.0
 SQLAlchemy==1.3.0
 urllib3==1.22
 visitor==0.1.3