[EmbeddedAnsible] Remove configuration_script uniqness spec

Doesn't seem to be requested at this point, so going to remove this
spec.  If it is something that is desired in the future, we can add it
back.

That said, if it is requested, it most likely came with a bug attached
to it, so we probably will have a few other things to solve if it turns
out this was actually a wanted/needed feature.

spec/models/manageiq/providers/embedded_ansible/automation_manager/configuration_script_spec.rb

@@ -156,18 +156,6 @@
           described_class.create_in_provider(manager.id, params)
         end.to raise_error(RuntimeError, error_msg)
       end
-
-      # TODO:  Determine if we want to have a uniqueness validation to
-      # replicate this functionality, otherwise delete this case.
-      #
-      # context "provider raises on create" do
-      #   it "with a string" do
-      #     expect(AnsibleTowerClient::Connection).to receive(:new).and_return(atc)
-      #     expect(job_templates).to receive(:create!).and_raise(AnsibleTowerClient::Error, "Job template with this Name already exists.")
-
-      #     expect { described_class.create_in_provider(manager.id, params) }.to raise_error(AnsibleTowerClient::Error, "Job template with this Name already exists.")
-      #   end
-      # end
     end
 
     it ".create_in_provider_queue" do