Fix (bug #1862): Do not clear entity manager for doctrine orm populator (#1995)
Fix (bug #1862): Do not clear entity manager for doctrine orm populator (#1995)

Bug: https://github.com/fzaninotto/Faker/issues/1862
Clear specific entities is deprecated and will not be supported in Doctrine 3.0. (https://github.com/doctrine/orm/commit/9ccb8837e7f0bc605117024561c07e487a57eca0)
Bug introduced: c49cd5438655043b487f4d986961746ae58edb3a
Related issue: https://stackoverflow.com/questions/18215975/doctrine-a-new-entity-was-found-through-the-relationship
localheinz/Faker,stof/Faker