Updated CI to not use github token

@@ -17,9 +17,7 @@ addons:
 
 before_script:
   - mysql -u root -e 'create database `bookstack-test`;'
-  - composer config -g github-oauth.github.com $GITHUB_ACCESS_TOKEN
   - phpenv config-rm xdebug.ini
-  - composer self-update
   - composer dump-autoload --no-interaction
   - composer install --prefer-dist --no-interaction
   - php artisan clear-compiled -n