Remove profile.api.php

The call is being done inside \Drupal\Core\Entity\EntityAccessControlHandler::access(), so no need for profile module to duplicate this I think. On the other hand I would say that the documentation and arguments for the hook inside profile.api.php are wrong. I had to declare my hook like mymodule_profile_access(Drupal\profile\Entity\Profile $profile, $op, Drupal\Core\Session\AccountInterface $account) and return \Drupal\Core\Access\AccessResultInterface instead of bool for it to work. I don't know if I should create another issue for this or upload the patch here.

This hook is covered by core, see hook_ENTITY_TYPE_access(). Since this is the only function in profile.api.php, the file can be removed.

Removed profile.api.php from the module as it is not required.

Thanks for cleanup, everyone!