Do not show warning with tests

.travis.yml

@@ -32,12 +32,9 @@ before_install:
   - cp $TRAVIS_BUILD_DIR/test/support/additional_environment.rb $REDMINE_PATH/config/
   - cp $TRAVIS_BUILD_DIR/test/support/database-$DB-travis.yml $REDMINE_PATH/config/database.yml
 
-install: "echo skip bundle install"
-
 before_script:
   # - bundle exec rake redmine:load_default_data REDMINE_LANG=en
   # - bundle exec rake db:structure:dump
-  - bundle install
   - bundle exec rake db:create
   - bundle exec rake db:migrate
   - bundle exec rake redmine:plugins:migrate