Remove legacy mysql charset code from DI
Remove legacy mysql charset code from DI

nicolas-grekas/DoctrineBundle,mikeSimonson/DoctrineBundle,OskarStark/DoctrineBundle,fabpot/DoctrineBundle,fabpot/DoctrineBundle,fervo/DoctrineBundle,mikeSimonson/DoctrineBundle,gencer/DoctrineBundle,nicolas-grekas/DoctrineBundle,doctrine/DoctrineBundle,gencer/DoctrineBundle,OskarStark/DoctrineBundle,fervo/DoctrineBundle