Remove: #609 NGワード設定の２項目を削除 (#789)

* Remove: #609 NGワード設定の２項目を削除

* Fix test

spec/lib/activitypub/activity/create_spec.rb

@@ -2273,50 +2273,6 @@ RSpec.describe ActivityPub::Activity::Create do
           end
         end
       end
-
-      context 'when stranger mention for domain' do
-        let(:object_json) do
-          {
-            id: [ActivityPub::TagManager.instance.uri_for(sender), '#bar'].join,
-            type: 'Note',
-            content: 'Lorem ipsum',
-            to: 'https://www.w3.org/ns/activitystreams#Public',
-            tag: [
-              {
-                type: 'Mention',
-                href: ActivityPub::TagManager.instance.uri_for(Fabricate(:account)),
-              },
-            ],
-          }
-        end
-
-        context 'when the domain does not have follower' do
-          let(:custom_before) { true }
-
-          before do
-            Setting.block_unfollow_account_mention = true
-            subject.perform
-          end
-
-          it 'creates status' do
-            expect(sender.statuses.first).to be_nil
-          end
-        end
-
-        context 'when other account following' do
-          let(:custom_before) { true }
-
-          before do
-            Setting.block_unfollow_account_mention = true
-            Fabricate(:account).follow!(sender)
-            subject.perform
-          end
-
-          it 'creates status' do
-            expect(sender.statuses.first).to_not be_nil
-          end
-        end
-      end
     end
 
     context 'when object URI uses bearcaps' do