Delete devices from UI

There used to be thread about deleting individual devices from the UI: Delete individual device from integration. This thread was closed, and one of the mods said the feature was implemented.

If this is the case, can someone please tell me how? I cannot find a “delete” button on the device overview page, or the individual device’s page.

My iPhone appears twice again in the device section (lost count on how many times this happened), and I’m just sick and tired of removing everything from the json files.