Update web hook spec

.rubocop.yml

@@ -393,4 +393,3 @@ RSpec/RepeatedExample:
     - 'spec/features/projects/files/template_type_dropdown_spec.rb'
     - 'spec/helpers/users_helper_spec.rb'
     - 'spec/services/notification_service_spec.rb'
-    - 'spec/services/web_hook_service_spec.rb'

changelogs/unreleased/webhook-service-spec.yml

+---
+title: Remove duplicate spec in web hook service spec
+merge_request: 28669
+author: Rajendra Kadam
+type: fixed

spec/services/web_hook_service_spec.rb

@@ -71,16 +71,6 @@ describe WebHookService do
       end
     end
 
-    it 'POSTs to the webhook URL' do
-      stub_full_request(project_hook.url, method: :post)
-
-      service_instance.execute
-
-      expect(WebMock).to have_requested(:post, stubbed_hostname(project_hook.url)).with(
-        headers: headers
-      ).once
-    end
-
     it 'POSTs the data as JSON' do
       stub_full_request(project_hook.url, method: :post)