[Bug 47495] should not include metathemes

[Pavel Roitberg]

Public bug reported:

I dont have "gnome-themes" installed, and thus all metathemes default to Raleigh for me.
I think that the metathemes should be shipped with the according engines, if at all, since this something which every user, which cares can do himself...

** Affects: ubuntu-artwork (Ubuntu)
       Severity: Normal
       Priority: (none set)
         Status: Unconfirmed

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should not include metathemes
https://launchpad.net/bugs/47495