Revert "DEV: Queue jobs in tests by default."

Too risky for now

This reverts commit be28154d3b9289a249d413d462705cd075375888.

plugins/discourse-narrative-bot/spec/integration/discobot_welcome_post_spec.rb

@@ -4,6 +4,7 @@ describe "Discobot welcome post" do
   let(:user) { Fabricate(:user) }
 
   before do
+    SiteSetting.queue_jobs = true
     SiteSetting.discourse_narrative_bot_enabled = true
   end
 

plugins/discourse-narrative-bot/spec/user_spec.rb

@@ -78,6 +78,7 @@ describe User do
         describe 'when welcome message is configured to be delayed' do
           before do
             SiteSetting.discourse_narrative_bot_welcome_post_delay = 100
+            SiteSetting.queue_jobs = true
           end
 
           it 'should delay the welcome post until user logs in' do