Revert "Upgrade Prophecy to work with PHP 7 Scalar Type Hints"
Revert "Upgrade Prophecy to work with PHP 7 Scalar Type Hints"

This reverts commit c42d52e178b222ae0e16d1617d13681e316d8f26.

DonaldKellett/phpunit,sebastianbergmann/phpunit,luomor/phpunit,duncan3dc/phpunit,Firehed/phpunit,stof/phpunit,tronsha/phpunit,didiwuliu/phpunit,OndraM/phpunit,masarakki/phpunit