Removed Testing component integration

We only have Unit tests in here and we do not use any of the Testing features.
It'll only slow down our tests and it currently breaks because it can't set up
a database.
The component should work standalone without the bundle. The tests of the component should test that the component works correctly standalone. The tests of the bundle, on the other hand, should test that the component is correctly integrated into the Symfony framework.

Running the tests about the integration in the Symfony framework *inside* the standalone bundle seems wrong to me.