You can copy, move, share, and delete your documents, images, and other files on iPad.
When viewing a file in a supported document format, you can modify and rearrange the document’s contents.
Go to the Files app , then tap a location in the sidebar.
Tap at the top of the sidebar, tap Edit Sidebar, then do any of the following:
Hide a location: Turn the location off.
Delete a tag and remove it from all items: Tap on your iPad.
Locate the file you want to delete.
Touch and hold the file, then tap Delete.