tests: set Delayed::Worker.delay_jobs = false globally.

test/unit/post_test.rb

@@ -13,7 +13,6 @@ class PostTest < ActiveSupport::TestCase
     CurrentUser.user = @user
     CurrentUser.ip_addr = "127.0.0.1"
     MEMCACHE.flush_all
-    Delayed::Worker.delay_jobs = false
     mock_saved_search_service!
   end
 
@@ -520,7 +519,6 @@ class PostTest < ActiveSupport::TestCase
       context "with an artist tag that is then changed to copyright" do
         setup do
           CurrentUser.user = FactoryGirl.create(:builder_user)
-          Delayed::Worker.delay_jobs = false
           @post = Post.find(@post.id)
           @post.update(:tag_string => "art:abc")
           @post = Post.find(@post.id)
@@ -528,10 +526,6 @@ class PostTest < ActiveSupport::TestCase
           @post.reload
         end
 
-        teardown do
-          Delayed::Worker.delay_jobs = true
-        end
-
         should "update the category of the tag" do
           assert_equal(Tag.categories.copyright, Tag.find_by_name("abc").category)
         end