Remove the temporary show=libs inspection view

The libs-section blacklist is confirmed safe; the review view has
served its purpose.

app/controllers/packages_controller.rb

@@ -381,11 +381,6 @@ class PackagesController < ApplicationController
     when 'without'
       packages = packages.without_screenshots
       logger.debug 'Limiting packages to those without screenshots'
-    when 'libs'
-      # Temporary inspection view: exactly the screenshot-bearing
-      # packages that the libs section blacklist would remove on the
-      # next import
-      packages = packages.where("section ~* '/?(old)?libs$'").with_screenshots
     end
 
     packages