Deleting a user defined perspective
  You can delete perspectives that you defined yourself, but not those that are delivered with the Workbench.
  
    - Open the 
     General > Perspectives
    preference page. General > Perspectives
    preference page.
- From the Available perspectives list, select the one that you want to delete and click
    Delete.
- Click OK.
Perspectives
  Saving a user defined perspective
  Resetting perspectives