What content did you have to make DLC content or cut completely because of time constraints?

[pleasegofuk]

Title. Genuinely curious as I've seen this in many games before where developers would make certain areas or templates, but either due to tight time constraints or other problems that arise, they would end up never using them at all, or players would have to wait until x many months or even years later where the content is finally released as DLC content or included in a patch. (facepalm)

Has anything like this ever happened with one of the games? If so, what kind of examples can you give out to satiate our curiosity?

Thanks~!