remove unused old travis file (#1793)

ng2-components/ng2-alfresco-webscript/.travis.yml

@@ -1,12 +0,0 @@
-language: node_js
-node_js:
-  - v5
-  - v4
-  - '0.12'
-  - '0.10'
-install: npm install
-sudo: false
-after_success:
-  npm run coverage
-# Send coverage data to Coveralls
-after_script: "cat ./coverage/lcov.info | ./node_modules/coveralls/bin/coveralls.js"