Amazon Kindle Paperwhite User Manual page 23

Note that this setting is device-specific and will not be saved when you deregister your
Kindle. To remove a collection from your device, tap the Menu icon on the collection's cover
when in grid view or on the right side of the screen when in list view, then tap Remove from
Device. You can also view this option by pressing and holding on the collection's cover or title.
Tips:

Deleting a collection that was created on a device or in a reading app that supports Cloud
Collections, such as your Kindle, will delete it from the Cloud and other devices or reading
apps that support Cloud Collections and are registered to the same Amazon account.

Deleting a collection from your Kindle does not remove the content stored on your device or
in the Cloud. Items previously placed into the collection that are stored on your Kindle will
appear on the Home screen and in the Cloud after the collection is deleted.
Kindle Paperwhite User's Guide, 3rd Edition
Chapter 3
Acquiring & Managing Kindle Content
23