Simply select those versions you want to remove, and click the Delete button. You can’t remove the latest version, and there is no Undo, though.
Revisionist
Does Time Machine manage the versions database? Doesn’t it contain lots of sensitive and private documents? How can I open a confidential PDF without it getting saved as a version?
Can now duplicate all the versions of a file into a normal folder; works with RTFD and other bundles; new tabular view and detailed info about versions.
Two new tools which scan folders for documents with versions, and display full information about those versions, including size and age.
The Eclectic Light Company 