Delete perspective in eclipse.

Not really a Java question, but this seems to be the best place for it at ExEx

I am reading the Eclipse RCP book and following along with the Hyperbola example.  Somehow the Hyperbola perspective is corrupted (null expection when try to bring it up) so I want to delete it.  Yet, when I go to General -> Perspectives -> Hyperbola Perspective, I am unable to delete because then Delete button is greyed out.

So then I tried removing the files:

[org.eclipsercp.book.samples_1.0.1]
org.eclipsercp.hyperbola_1.0.1.jar
org.eclipsercp.hyperbola.ui_1.0.0.jar
org.eclipsercp.book.tools_1.0.1.jar
org.eclipsercp.hyperbola.muc_1.0.0.jar
org.eclipsercp.hyperbola.ui.workbench_1.0.0.jar
org.eclipsercp.hyperbola_1.0.0.chapter23.jar
org.eclipsercp.hyperbola.product.ide_1.0.0.jar

from the plugin directory and started eclipse with -clean.  
Still, the hyperbola plugin appears in the plugin perspective.

How do i delete the perspective?

LVL 1
allelopathAsked:
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Ajay-SinghConnect With a Mentor Commented:
But if you want to remove it from eclipse installation so that i doesn't get loaded, you can try deleting the references from
[Workspace Location]/.metadata/.plugins (like you did in the plugin folder)

and then start the eclipse with -clean.
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Ajay-SinghCommented:
> How do i delete the perspective?

Do you want to remove it from current view? If yes - then right click on the top right on the prespective (where it shows all the prespectives) and click on "Close"
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allelopathAuthor Commented:
Getting closer, but not there yet. I've removed:
[Workspace Location]/org.eclipse.hyperbola/*
[Workspace Location]/.metadata/.plugins/org.eclipse.core.resources/.projects/org.eclipsercp.hyperbola/*
so the perspective is gone.

The hyperbola program was installed by Help -> Software Updates -> Find and Install...Search for new features to install and then navigate to the CD.  If i now go to Help -> Software Updates -> Manage Configuation, a page appears entitled "Product Configuration" and hyperbola is still listed.  I can disaable it, but not delete.  How can it be deleted?

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allelopathAuthor Commented:
I have reinstalled eclipse.  It seems to be the best way to eliminate it completely.
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