Clean travis

.travis.yml

@@ -4,8 +4,6 @@ cache: pip
 
 sudo: required
 
-dist: trusty
-
 python:
     - "3.6"
     - "3.6-dev"
@@ -15,15 +13,8 @@ install:
     - sudo apt-get update -qq
     - sudo apt-get install -y -qq jq moreutils
     - pip install jsonschema
-    - git clone https://github.com/MISP/PyTaxonomies.git
-    - pushd PyTaxonomies
-    - pip install .
-    - popd
+    - pip install git+https://github.com/MISP/PyTaxonomies.git
 
 script:
     - ./validate_all.sh
     - pytaxonomies -l MANIFEST.json -a
-    - pushd PyTaxonomies
-    - pip install -r website/REQUIREMENTS.txt
-    - nosetests
-    - popd