mods: remove ability to manually perform mass edits.

Remove the ability for mods to manually perform mass edits without going
through the forum.

test/functional/moderator/tags_controller_test.rb

@@ -1,29 +0,0 @@
-require 'test_helper'
-
-module Moderator
-  class TagsControllerTest < ActionDispatch::IntegrationTest
-    context "The tags controller" do
-      setup do
-        @user = create(:moderator_user)
-        as_user do
-          @post = create(:post)
-        end
-      end
-
-      should "render the edit action" do
-        get_auth edit_moderator_tag_path, @user
-        assert_response :success
-      end
-
-      should "execute the update action" do
-        put_auth moderator_tag_path, @user, params: {:tag => {:predicate => "aaa", :consequent => "bbb"}}
-        assert_redirected_to edit_moderator_tag_path
-      end
-
-      should "fail gracefully if the update action fails" do
-        put_auth moderator_tag_path, @user, params: {:tag => {:predicate => "", :consequent => "bbb"}}
-        assert_redirected_to edit_moderator_tag_path
-      end
-    end
-  end
-end