Updating requirements

requirements.txt

@@ -1,17 +1,12 @@
-BeautifulSoup==3.2.1
 Django==1.6.11
 PyYAML==3.11
 South==1.0
 argparse==1.2.1
-arrow==0.7.0
+arrow==0.10.0
 astroid==1.3.6
-datadiff==1.1.6
-django-debug-toolbar==1.3.2
 dodgy==0.1.7
-hockeyapp==0.4.0
 logilab-common==0.63.2
 mccabe==0.3
-msgpack-python==0.4.6
 numpy==1.9.0
 pep257==0.5.0
 pep8==1.6.2
@@ -29,7 +24,5 @@ pytz==2014.10
 requests==2.6.0
 requirements-detector==0.4
 setoptconf==0.2.0
-sexpdata==0.0.3
 six==1.9.0
-sqlparse==0.1.15
 wsgiref==0.1.2