Removing views which outlived its purpose, simple removal(Removing a view and its related records from a VOB) or should we perform any sort of housekeeping on the branches, elements etc. the views have been used to amend?
No: the versions/branches can exist independently from the views.
You can simply do a cleatool rmview (in order to remove the tag and unregister the view).
The only cleanup you can do is to remove the checked out versions which are still recorded by a vob (even when a view has been removed):
cleartool descr -l vob:\avob | grep uuid
Then:
cleartool rmview --force -vob \avob -uuid an_uuid
来源：https://stackoverflow.com/questions/21607669/removal-of-clearcase-views-involves-any-housekeeping