Delete legacy travis.yml

.travis.yml

@@ -1,13 +0,0 @@
-language: php
-before_script:
-    - git clone --depth 1 git://github.com/YunoHost/package_linter ../package_linter && cd ../package_linter
-    - mv ../hotspot_ynh hotspot_ynh
-script:
-    - ./package_linter.py hotspot_ynh
-notifications:
-  email: false
-  irc:
-    on_success: always
-    on_failure: always
-    channels:
-      - "irc.geeknode.org#labriqueinter.net-dev"