feat: common attachment endpoint follow-up changes (#7826)

spec/controllers/api/v1/accounts/articles_controller_spec.rb

@@ -259,23 +259,5 @@ RSpec.describe 'Api::V1::Accounts::Articles', type: :request do
         expect(json_response['payload']['id']).to eq(root_article.id)
       end
     end
-
-    describe 'Upload an image' do
-      let(:article) { create(:article, account_id: account.id, category_id: category.id, portal_id: portal.id, author_id: agent.id) }
-
-      it 'update the article with an image' do
-        file = fixture_file_upload(Rails.root.join('spec/assets/avatar.png'), 'image/png')
-
-        post "/api/v1/accounts/#{account.id}/portals/#{article.portal.slug}/articles/attach_file",
-             headers: agent.create_new_auth_token,
-             params: { background_image: file }
-
-        expect(response).to have_http_status(:success)
-
-        blob = response.parsed_body
-
-        expect(blob['file_url']).to be_present
-      end
-    end
   end
 end