Remove cache install

.travis.yml

@@ -6,15 +6,11 @@ services:
     - mysql
     - redis
     - memcached
-before_install:
-    - apt-get update
-    - apt-get install -qq libmemcached-dev
 before_script:
     - pecl install ast
     - composer install
     - git clone -b develop https://github.com/Orange-Management/Build.git
     - chmod -R 755 Build/Hooks
-    - printf "\n" | pecl install memcached
 addons:
     code_climate:
         repo_token: