You can delete a version of file. When you delete a version, its revisions are also deleted.
Note The remaining versions are not renumbered when a version is deleted. For example, let’s say a file has three versions. If you delete v2, v1 and v3 will keep their existing version numbers.
Note If you want to delete all versions of a file, then delete the file. For details, see Delete Files and Folders.
Click Files in the side panel. (If Files is not shown, see Customize the Side panel for details on how to add it.)
Open a file.
In the Versions panel, hover over a version, then click .
Click Delete to confirm.