Removed lazymap from blacklist, as it's not longer used

Lazymap was introduced in sebastianbergmann/phpunit@89d74305f8c4a99e6e57551da512b6b3892bd870 because of sebastianbergmann/phpunit-mock-objects@84b27568405dca29de30bc2cdf457e25f5bede7e.

Since doctrine/instantiator does not longer depend on ocramius/lazy-map (like ocramius/instantiator did), it should be removed from the blacklist.