This system was spread out among other files, including a review system and such. The commit where Satoshi has removed it provides a nice overview: https://git

This system was spread out among other files, including a review system and such. The commit where Satoshi has removed it provides a nice overview: https://github.com/bitcoin/bitcoin/commit/5253d1ab77fab1995ede03fb934edd67f1359ba8 https://github.com/bitcoin/bitcoin/commit/5253d1ab77fab1995e...