Remove ember-cli-test-loader from bower.json

[nucleartide]

I'm on Ember 2.7, and I get a deprecation warning after installing ember-cli-mocha:

DEPRECATION: ember-cli-test-loader should now be included as an NPM module with version 1.1.0 or greater.

It'd be nice to remove this line, but I'm not sure how that might affect people using versions of Ember prior to 2.7.

[Turbo87]

@nucleartide Previous versions of Ember CLI already included the test loader in bower.json anyway (see https://github.com/ember-cli/ember-cli/blob/v2.6.3/blueprints/app/files/bower.json#L6), so I'm not sure why it was added here too. IMHO we can remove that line. Could you open a PR that removes it?

[Turbo87]

actually, just removing it might not be such a great idea. we should try to mimic what has been done in ember-cli/ember-cli-qunit@115d56b instead.

[alexlafroscia]

If I understand correctly, we should be able to add ember-cli-test-loader as a dependency of ember-cli-mocha and then expose it using the shouldIncludeChildAddon hook instead, allowing us to avoid adding the dependency to the consuming application entirely.