Apply suggestions from code review

Co-authored-by: Niklas van Schrick <mc.taucher2003@gmail.com>
Signed-off-by: Raphael Götz <52959657+raphael-goetz@users.noreply.github.com>

Author: raphael-goetz

spec/jobs/update_flow_for_project_job_spec.rb

@@ -9,7 +9,6 @@
 
   before do
     allow(FlowHandler).to receive(:update_flow)
-    allow(FlowHandler).to receive(:delete_flow)
   end
 
   it 'sends a valid flow update' do
@@ -18,15 +17,13 @@
     perform_enqueued_jobs { described_class.perform_later(flow.id) }
 
     expect(FlowHandler).to have_received(:update_flow).with(flow)
-    expect(FlowHandler).not_to have_received(:delete_flow)
   end
 
   it 'does not send a deletion for a newly created invalid flow' do
     flow.update!(validation_status: :invalid)
 
     perform_enqueued_jobs { described_class.perform_later(flow.id) }
 
-    expect(FlowHandler).not_to have_received(:delete_flow)
     expect(FlowHandler).not_to have_received(:update_flow)
   end
 end