cleaning the travis.yml file

.travis.yml

@@ -2,17 +2,13 @@ matrix:
   include:
     - os: linux
       dist: trusty
+    - os: linux
+      dist: precise
 
 sudo: false
 
 before_install:
   - ./tests/cfg/pki/create_tsa_certs
-  - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then xcode-select --install; fi
-  - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then brew update  ; fi
-  - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then brew install argp-standalone; fi
-  - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then brew install valgrind; fi
-  - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then brew install libxml2; fi
-  - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then brew install coreutils; fi
 
 addons:
   apt:
@@ -20,7 +16,6 @@ addons:
       - cmake
       - time
       - valgrind
-      - libxml2-utils
       - libc6-dev
       - gcc
       - g++