spec: clear deliveries before every example

spec/features/new_gestionnaire/gestionnaire_spec.rb

@@ -73,9 +73,6 @@ feature 'The gestionnaire part' do
   end
 
   scenario 'A gestionnaire can use avis' do
-    ActionMailer::Base.deliveries = []
-    ActiveJob::Base.queue_adapter = :test
-
     log_in(gestionnaire.email, password)
 
     click_on procedure.libelle

spec/models/dossier_spec.rb

@@ -600,10 +600,6 @@ describe Dossier do
     let(:procedure) { create(:procedure) }
     let(:user) { create(:user) }
 
-    before do
-      ActionMailer::Base.deliveries.clear
-    end
-
     it "send an email when the dossier is created for the very first time" do
       dossier = nil
       ActiveJob::Base.queue_adapter = :test

spec/spec_helper.rb

@@ -137,6 +137,8 @@ RSpec.configure do |config|
 
     Typhoeus::Expectation.clear
 
+    ActionMailer::Base.deliveries.clear
+
     if Flipflop.remote_storage?
       VCR.use_cassette("ovh_storage_init") do
         CarrierWave.configure do |config|