maint(core remove): Make remove/destroy handler always active.

Import remove module in registry, so that it is always active.
We do want the destroy handler be called when pattern elements are remvoed.

Author: thet

src/core/registry.js

@@ -20,6 +20,7 @@ import $ from "jquery";
 import dom from "./dom";
 import logging from "./logging";
 import utils from "./utils";
+import "./remove";
 
 const log = logging.getLogger("registry");
 const disable_re = /patterns-disable=([^&]+)/g;

src/pat/slides/slides.js

@@ -6,7 +6,6 @@
 import $ from "jquery";
 import registry from "../../core/registry";
 import utils from "../../core/utils";
-import "../../core/remove";
 
 var slides = {
     name: "slides",