Items cannot be deleted from within your Recent list, only removed.
•To remove items from your Recent view, select the files or folders you want to remove by … See more

Open the Shared view, and select the files or folders you want to remove by pointing to each item and clicking the circle check box that appears.
To remove … See more

Delete from your OneDrive but not your computer
If you want to keep a file, photo, or folder on your computer, but not on OneDrive, use File Explor… See more

Your deleted files and folders go to the OneDrive recycle bin from which you can restore files if you need to.
First, select Recycle bin in the OneDrive left side naviga… See more