Remove before_script

.travis.yml

@@ -48,20 +48,6 @@ matrix:
     # See: https://github.com/rust-lang-nursery/rustfmt/issues/2787
     - env: INTEGRATION=stdsimd
 
-before_script:
-- |
-  if [ -z ${INTEGRATION} ]; then
-    if [ $TRAVIS_OS_NAME = 'osx' ]; then
-      virtualenv env &&
-      source env/bin/activate &&
-      python --version &&
-      pip install 'travis-cargo<0.2'
-    else
-      pip install 'travis-cargo<0.2' --user &&
-      export PATH="$(python -m site --user-base)/bin:$PATH"
-    fi
-  fi
-
 script:
   - |
     if [ -z ${INTEGRATION} ]; then