Deleting Dimension Attributes
To delete dimension attributes:
In your application, select Manage, and then Dimensions.
Select a dimension, then click Actions, and then Edit.
On the Attribute tab, select an attribute, and then click Delete. Click Yes to answer the question, “Are you sure you want to delet the selected items?”
You can't delete an attribute if it is referenced in a data set.
Click Save, Save and Close, or Close.