Don't reference private visibility in the processing message

This was no longer a true statement.
Fixes #3087

config/locales/sufia.en.yml

@@ -240,7 +240,7 @@ en:
     works:
       create:
         header: "Add New %{type}"
-        after_create_html: "Your files are being processed by %{application_name} in the background. The metadata and access controls you specified are being applied. Files will be marked <span class=\"label label-danger\" title=\"Private\">Private</span> until this process is complete (shouldn't take too long, hang in there!). You may need to refresh this page to see these updates."
+        after_create_html: "Your files are being processed by %{application_name} in the background. The metadata and access controls you specified are being applied. You may need to refresh this page to see these updates."
       edit:
         breadcrumb: 'Edit'
       form:

spec/controllers/curation_concerns/generic_works_controller_spec.rb

@@ -122,7 +122,7 @@
         },
         uploaded_files: ['777', '888']
       }
-      expect(flash[:notice]).to eq "Your files are being processed by Sufia in the background. The metadata and access controls you specified are being applied. Files will be marked <span class=\"label label-danger\" title=\"Private\">Private</span> until this process is complete (shouldn't take too long, hang in there!). You may need to refresh this page to see these updates."
+      expect(flash[:notice]).to eq "Your files are being processed by Sufia in the background. The metadata and access controls you specified are being applied. You may need to refresh this page to see these updates."
       expect(response).to redirect_to main_app.curation_concerns_generic_work_path(work)
     end
 
@@ -182,7 +182,7 @@
             parent_id: work.id,
             generic_work: { title: ['First title'] }
           }
-          expect(flash[:notice]).to eq "Your files are being processed by Sufia in the background. The metadata and access controls you specified are being applied. Files will be marked <span class=\"label label-danger\" title=\"Private\">Private</span> until this process is complete (shouldn't take too long, hang in there!). You may need to refresh this page to see these updates."
+          expect(flash[:notice]).to eq "Your files are being processed by Sufia in the background. The metadata and access controls you specified are being applied. You may need to refresh this page to see these updates."
           expect(response).to redirect_to main_app.curation_concerns_generic_work_path(work)
         end
       end