Remove allowing extra 2 lines since prepend_if_ee
What does this MR do?
Remove allowing extra 2 lines since prepend_if_ee
Since we can just use prepend_if_ee
now we shouldn't allow any
difference. We should just add them to CE.
And prepend_if_ee
is already documented: https://docs.gitlab.com/ee/development/ee_features.html#ee-features-based-on-ce-features