Revert "DEV: enable cors to all cdn get requests from workbox. (#10684)" (#11076)

This reverts commit e3de45359f.

We need to improve out strategy by adding a cache breaker with this change ... some assets on CDNs and clients may have incorrect CORS headers which can cause stuff to break.

spec/requests/application_controller_spec.rb

@@ -737,17 +737,6 @@ RSpec.describe ApplicationController do
       end
     end
 
-    context "cdn requests" do
-      before do
-        GlobalSetting.stubs(:cdn_url).returns("https://www.example.com/")
-      end
-
-      it "should block the dynamic routes" do
-        get "/"
-        expect(response.status).to eq(404)
-      end
-    end
-
     context "set_locale_from_accept_language_header enabled" do
       context "accept-language header differs from default locale" do
         before do

spec/requests/static_controller_spec.rb

@@ -116,25 +116,6 @@ describe StaticController do
         File.delete(file_path)
       end
     end
-
-    it 'has correct cors headers for brotli assets' do
-      begin
-        assets_path = Rails.root.join("public/assets")
-
-        FileUtils.mkdir_p(assets_path)
-
-        file_path = assets_path.join("test.js.br")
-        File.write(file_path, 'fake brotli file')
-        GlobalSetting.stubs(:cdn_url).returns("https://www.example.com/")
-
-        get "/brotli_asset/test.js"
-
-        expect(response.status).to eq(200)
-        expect(response.headers["Access-Control-Allow-Origin"]).to match("*")
-      ensure
-        File.delete(file_path)
-      end
-    end
   end
 
   context '#cdn_asset' do