Remove unused scope `Announcement.without_muted` (#28645)

app/models/announcement.rb

@@ -20,7 +20,6 @@
 class Announcement < ApplicationRecord
   scope :unpublished, -> { where(published: false) }
   scope :published, -> { where(published: true) }
-  scope :without_muted, ->(account) { joins("LEFT OUTER JOIN announcement_mutes ON announcement_mutes.announcement_id = announcements.id AND announcement_mutes.account_id = #{account.id}").where(announcement_mutes: { id: nil }) }
   scope :chronological, -> { order(coalesced_chronology_timestamps.asc) }
   scope :reverse_chronological, -> { order(coalesced_chronology_timestamps.desc) }
 

spec/models/announcement_spec.rb

@@ -25,22 +25,6 @@ describe Announcement do
       end
     end
 
-    describe '#without_muted' do
-      let!(:announcement) { Fabricate(:announcement) }
-      let(:account) { Fabricate(:account) }
-      let(:muted_announcement) { Fabricate(:announcement) }
-
-      before do
-        Fabricate(:announcement_mute, account: account, announcement: muted_announcement)
-      end
-
-      it 'returns the announcements not muted by the account' do
-        results = described_class.without_muted(account)
-        expect(results).to include(announcement)
-        expect(results).to_not include(muted_announcement)
-      end
-    end
-
     context 'with timestamped announcements' do
       let!(:adam_announcement) { Fabricate(:announcement, starts_at: 100.days.ago, scheduled_at: 10.days.ago, published_at: 10.days.ago, ends_at: 5.days.from_now) }
       let!(:brenda_announcement) { Fabricate(:announcement, starts_at: 10.days.ago, scheduled_at: 100.days.ago, published_at: 10.days.ago, ends_at: 5.days.from_now) }