rm a now-useless spec

spec/services/notification_recipient_service_spec.rb

-require 'spec_helper'
-
-describe NotificationRecipientService do
-  set(:user) { create(:user) }
-  set(:project) { create(:project, :public) }
-  set(:issue) { create(:issue, project: project) }
-
-  set(:watcher) do
-    watcher = create(:user)
-    setting = watcher.notification_settings_for(project)
-    setting.level = :watch
-    setting.save
-
-    watcher
-  end
-
-  subject { described_class.new(project) }
-
-  describe '#build_recipients' do
-    it 'does not modify the participants of the target' do
-      expect { subject.build_recipients(issue, user, action: :new_issue) }
-        .not_to change { issue.participants(user) }
-    end
-  end
-
-  describe '#build_new_note_recipients' do
-    set(:note) { create(:note_on_issue, noteable: issue, project: project) }
-
-    it 'does not modify the participants of the target' do
-      expect { subject.build_new_note_recipients(note) }
-        .not_to change { note.noteable.participants(note.author) }
-    end
-  end
-end