Where is the delete/remove button to remove dynamic links/deep links within a Firebase project?
It's not currently possible to remove existing links without removing the entire project. Just remove the link placement instead and create a new link if necessary.
Update December 11th, 2017: You can now do this! From the Firebase console, select the little three dots next to your link and then choose the "Archive Link" option from the pop-up menu. This will essentially delete it for all intents and purposes. (The deleted link will still work, but it'll no longer show up in the Firebase console.)
You can use "Archive Link" option to delete it, It's the only way to do it. The real problem is that you can not delete THE DYNAMIC LINKS DOMAIN itself as the time of writing this post.
来源：https://stackoverflow.com/questions/37486585/how-do-i-delete-remove-dynamic-links-in-firebase