Remove glitch-soc specific and obsolete /api/v1/mutes/details

spec/controllers/api/v1/mutes_controller_spec.rb

@@ -60,25 +60,4 @@ RSpec.describe Api::V1::MutesController, type: :controller do
       end
     end
   end
-
-  describe 'GET #details' do
-    before do
-      Fabricate(:mute, account: user.account, hide_notifications: false)
-      get :details, params: { limit: 1 }
-    end
-
-    let(:mutes) { JSON.parse(response.body) }
-
-    it 'returns http success' do
-      expect(response).to have_http_status(:success)
-    end
-
-    it 'returns one mute' do
-      expect(mutes.size).to be(1)
-    end
-
-    it 'returns whether the mute hides notifications' do
-      expect(mutes.first["hide_notifications"]).to be(false)
-    end 
-  end
 end