Revert "Merge pull request #16888 from jejacks0n/render_template"

This reverts commit 07635a74b5ee08dcba3f6617def6230d8f114fe5, reversing
changes made to 1b5f61a025b6ce1ee52b7148e3ed2a9acbde28b9.

Reason: it's not ready :bomb:, see https://github.com/rails/rails/pull/16888#issuecomment-56400816