Use stub_pds_search_to_return_no_patients

This updates two feature tests to use the
`stub_pds_search_to_return_no_patients` instead of duplicating the code.

spec/features/parent_consent_school_session_completed_spec.rb

@@ -5,8 +5,9 @@
   after { Flipper.disable(:release_1b) }
 
   scenario "Move to a completed session" do
+    stub_pds_search_to_return_no_patients
+
     given_an_hpv_programme_is_underway
-    and_requests_can_be_made_to_pds
 
     when_i_go_to_the_consent_form
     when_i_fill_in_my_childs_name_and_birthday
@@ -50,13 +51,6 @@ def given_an_hpv_programme_is_underway
     @child = create(:patient, session: @scheduled_session)
   end
 
-  def and_requests_can_be_made_to_pds
-    stub_request(
-      :get,
-      "https://sandbox.api.service.nhs.uk/personal-demographics/FHIR/R4/Patient"
-    ).with(query: hash_including({})).to_return_json(body: { total: 0 })
-  end
-
   def when_a_nurse_checks_consent_responses
     sign_in @organisation.users.first
     visit "/dashboard"

spec/features/parental_consent_clinic_spec.rb

@@ -5,8 +5,9 @@
   after { Flipper.disable(:release_1b) }
 
   scenario "Child attending a clinic goes to a school" do
+    stub_pds_search_to_return_no_patients
+
     given_an_hpv_programme_is_underway
-    and_requests_can_be_made_to_pds
 
     when_i_go_to_the_consent_form
     and_i_fill_in_my_childs_name_and_birthday
@@ -36,8 +37,9 @@
   end
 
   scenario "Child attending a clinic is home-schooled" do
+    stub_pds_search_to_return_no_patients
+
     given_an_hpv_programme_is_underway
-    and_requests_can_be_made_to_pds
 
     when_i_go_to_the_consent_form
     and_i_fill_in_my_childs_name_and_birthday
@@ -64,8 +66,9 @@
   end
 
   scenario "Child attending a clinic is not in education" do
+    stub_pds_search_to_return_no_patients
+
     given_an_hpv_programme_is_underway
-    and_requests_can_be_made_to_pds
 
     when_i_go_to_the_consent_form
     and_i_fill_in_my_childs_name_and_birthday
@@ -112,13 +115,6 @@ def given_an_hpv_programme_is_underway
     create(:school, organisation: @organisation, name: "Pilot School")
   end
 
-  def and_requests_can_be_made_to_pds
-    stub_request(
-      :get,
-      "https://sandbox.api.service.nhs.uk/personal-demographics/FHIR/R4/Patient"
-    ).with(query: hash_including({})).to_return_json(body: { total: 0 })
-  end
-
   def when_i_go_to_the_consent_form
     visit start_parent_interface_consent_forms_path(@session, @programme)
   end