That worked to remove the Calendar, but does not work for the Clock. Now my calendar is gone. I don’t even know how they were combined in a Utilities folder to begin with???
It’s possible that this happened after an update.
The Calendar app should be somewhere on one of your homescreens. I hope you didn’t tap the small x icone when they started wiggling. That would remove them from your device.
It should be possible to move the Clock app out of the folder the way I’ve described it.