removing leftover references to south_migrations folder

.coveragerc

@@ -4,7 +4,6 @@
 branch = True
 include = helpdesk/*
 omit =
-    *helpdesk/south_migrations/*
     *helpdesk/migrations/*
 
 [report]

.pylintrc

@@ -9,7 +9,7 @@
 
 # Add files or directories to the blacklist. They should be base names, not
 # paths.
-ignore=CVS,migrations,south_migrations
+ignore=CVS,migrations
 
 # Pickle collected data for later comparisons.
 persistent=yes

.travis.yml

@@ -19,7 +19,7 @@ install:
     - pip install -q -r requirements.txt
 
 before_script:
-    - "pep8 --exclude=migrations,south_migrations --ignore=E501 helpdesk"
+    - "pep8 --exclude=migrations --ignore=E501 helpdesk"
 
 script: 
     - coverage run --source='.' quicktest.py helpdesk