Remove dead travis-ci configuration

.travis.yml

@@ -1,18 +0,0 @@
-env:
- - DJANGO_SETTINGS_MODULE=settings
-sudo: true
-before_install:
-  - sudo apt-get update -qq
-  - sudo apt-get install -qq build-essential gettext python-dev zlib1g-dev libpq-dev xvfb
-  - sudo apt-get install -qq libtiff4-dev libjpeg8-dev libfreetype6-dev liblcms1-dev libwebp-dev
-  - sudo apt-get install -qq graphviz-dev python-setuptools python3-dev python-virtualenv python-pip
-  - sudo apt-get install -qq firefox automake libtool libreadline6 libreadline6-dev libreadline-dev
-  - sudo apt-get install -qq libsqlite3-dev libxml2 libxml2-dev libssl-dev libbz2-dev wget curl llvm
-language: python
-python:
-- "3.5"
-services:
- - postgresql
-install: "pip install -r requirements/test.txt"
-script:
-    - coverage run manage.py test