Revert "Merge branch 'master' of https://github.com/discourse/discourse"

This reverts commit e62a85cf6f, reversing
changes made to 2660c2e21d.

spec/requests/posts_controller_spec.rb

@@ -675,17 +675,6 @@ describe PostsController do
           I18n.t("invalid_params", message: "category")
         )
       end
-
-      it 'will raise an error if specified embed_url is invalid' do
-        user = Fabricate(:admin)
-        master_key = Fabricate(:api_key).key
-
-        post "/posts.json",
-          params: { title: 'this is a test title', raw: 'this is test body', embed_url: '/test.txt' },
-          headers: { HTTP_API_USERNAME: user.username, HTTP_API_KEY: master_key }
-
-        expect(response.status).to eq(422)
-      end
     end
 
     describe "when logged in" do