Remove: #372 削除予定のドメインブロック項目をいったん削除 (#444)

* Remove: #372 削除予定のドメインブロック項目をいったん削除

* Fix test

app/serializers/rest/admin/domain_block_serializer.rb

@@ -3,8 +3,8 @@
 class REST::Admin::DomainBlockSerializer < ActiveModel::Serializer
   attributes :id, :domain, :created_at, :severity,
              :reject_media, :reject_favourite, :reject_reply, :reject_reports,
-             :reject_send_not_public_searchability, :reject_reply_exclude_followers,
-             :reject_send_public_unlisted, :reject_send_dissubscribable, :reject_send_media, :reject_send_sensitive,
+             :reject_reply_exclude_followers,
+             :reject_send_media, :reject_send_sensitive,
              :reject_hashtag, :reject_straight_follow, :reject_new_follow, :reject_friend, :detect_invalid_subscription,
              :private_comment, :public_comment, :obfuscate