ClearCase Support: How to Delete Labels and Label Types
Here is the command to delete a label.
For instance, if you wanted to delete the "label_test" label on the file "/vob/test/a.txt", then here is the command.
|$ cleartool rmlabel –nc label_test /vob/test/a.txt|
Alternatively, here is the command to delete an entire label type. In other words, you wanted to delete all the labels with a certain label name as well as deleting the label name.
Keep in mind, this will delete the label type in only one VOB at a time, so you have to run this command once in each VOB that you want the label type deleted.
by Phil for Humanity