dossiers: always allow to create a new dossier

Turns out this is confusing for users (some UI elements are present for
some procedures, but not for others).

Better enable it for everyone.

app/views/users/dossiers/_dossier_actions.html.haml

@@ -1,5 +1,5 @@
 - has_delete_action = dossier.can_be_deleted_by_user?
-- has_new_dossier_action = dossier.procedure.expects_multiple_submissions? && dossier.procedure.accepts_new_dossiers?
+- has_new_dossier_action = dossier.procedure.accepts_new_dossiers?
 
 - has_actions = has_delete_action || has_new_dossier_action
 

spec/views/users/dossiers/_dossier_actions.html.haml_spec.rb

@@ -1,5 +1,5 @@
 describe 'users/dossiers/dossier_actions.html.haml', type: :view do
-  let(:procedure) { create(:procedure, :published, expects_multiple_submissions: true) }
+  let(:procedure) { create(:procedure, :published) }
   let(:dossier) { create(:dossier, :en_construction, procedure: procedure) }
 
   subject { render 'users/dossiers/dossier_actions.html.haml', dossier: dossier }
@@ -12,18 +12,13 @@ describe 'users/dossiers/dossier_actions.html.haml', type: :view do
     it { is_expected.not_to have_link('Supprimer le dossier') }
   end
 
-  context 'when the procedure doesn’t expect multiple submissions' do
-    let(:procedure) { create(:procedure, :published, expects_multiple_submissions: false) }
-    it { is_expected.not_to have_link('Commencer un autre dossier') }
-  end
-
   context 'when the procedure is closed' do
-    let(:procedure) { create(:procedure, :archived, expects_multiple_submissions: true) }
+    let(:procedure) { create(:procedure, :archived) }
     it { is_expected.not_to have_link('Commencer un autre dossier') }
   end
 
   context 'when there are no actions to display' do
-    let(:procedure) { create(:procedure, :published, expects_multiple_submissions: false) }
+    let(:procedure) { create(:procedure, :archived) }
     let(:dossier) { create(:dossier, :accepte, procedure: procedure) }
 
     it 'doesn’t render the menu at all' do