Fix Rubocop: Hard delete paranoid associations

As much as the associated models act_as_paranoid, it
doesnt make sense to keep them around after deleting the enterprise

spec/models/enterprise_spec.rb

@@ -86,6 +86,26 @@ describe Enterprise do
       expect(DistributorShippingMethod.where(id: shipping_method_ids)).not_to exist
     end
 
+    it "destroys all enterprise_fees upon destroy" do
+      enterprise = create(:enterprise)
+      fee_ids = create_list(:enterprise_fee, 2, enterprise:).map(&:id)
+
+      expect(EnterpriseFee.where(id: fee_ids)).to exist
+      enterprise.destroy
+      expect(EnterpriseFee.where(id: fee_ids)).not_to exist
+    end
+
+    it "destroys all vouchers upon destroy" do
+      enterprise = create(:enterprise)
+      voucher_ids = (1..2).map do |code|
+        create(:voucher, enterprise:, code: "new code #{code}")
+      end.map(&:id)
+
+      expect(Voucher.where(id: voucher_ids)).to exist
+      enterprise.destroy
+      expect(Voucher.where(id: voucher_ids)).not_to exist
+    end
+
     describe "relationships to other enterprises" do
       let(:e) { create(:distributor_enterprise) }
       let(:p) { create(:supplier_enterprise) }