Remove `Services::Twitter` spec

spec/models/services/twitter_spec.rb

@@ -1,46 +0,0 @@
-# frozen_string_literal: true
-
-require 'rails_helper'
-
-describe Services::Twitter do
-  describe "#post" do
-    let(:user) { FactoryBot.create(:user) }
-    let(:service) { Services::Twitter.create(user: user) }
-    let(:answer) { FactoryBot.create(:answer, user: user,
-                                     content: 'a' * 255,
-                                     question_content: 'q' * 255) }
-    let(:twitter_client) { instance_double(Twitter::REST::Client) }
-
-    before do
-      allow(Twitter::REST::Client).to receive(:new).and_return(twitter_client)
-      allow(twitter_client).to receive(:update!)
-      stub_const("APP_CONFIG", {
-        'hostname' => 'example.com',
-        'https' => true,
-        'items_per_page' => 5,
-        'sharing' => {
-          'twitter' => {
-            'consumer_key' => 'AAA',
-          }
-        }
-      })
-    end
-
-    it "posts a shortened tweet" do
-      service.post(answer)
-
-      expect(twitter_client).to have_received(:update!).with("#{'q' * 123}… — #{'a' * 124}… https://example.com/@#{user.screen_name}/a/#{answer.id}")
-    end
-    
-    it "posts an un-shortened tweet" do
-      answer.question.content = 'Why are raccoons so good?'
-      answer.question.save!
-      answer.content = 'Because they are good cunes.'
-      answer.save!
-
-      service.post(answer)
-
-      expect(twitter_client).to have_received(:update!).with("#{answer.question.content} — #{answer.content} https://example.com/@#{user.screen_name}/a/#{answer.id}")
-    end
-  end
-end