Remove deprecated functions

[twiecki]

Throughout the code-base there are quite a few things we deprecated a while ago and should remove for 4.0. Here are a few: #5109

But in general, searching for DeprecationWarning or FutureWarning should bring those up.

[farhanreynaldo]

I would like to work on this issue.

[twiecki]

Great, it's yours!

…

On Wed, Nov 3, 2021, 02:46 Farhan Reynaldo ***@***.***> wrote: I would like to work on this issue. — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#5124 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAFETGGQQASUMU3NP5TO7H3UKCH6RANCNFSM5HCO23YA> . Triage notifications on the go with GitHub Mobile for iOS <https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675> or Android <https://play.google.com/store/apps/details?id=com.github.android&referrer=utm_campaign%3Dnotification-email%26utm_medium%3Demail%26utm_source%3Dgithub>.