import from UXP: No issue - Remove leftover reference to focus handle…

…r for dev edition doorhanger (1116e8e1)

devtools/client/webconsole/hudservice.js

@@ -675,7 +675,6 @@ BrowserConsole.prototype = extend(WebConsole.prototype, {
     // instance.
     let onClose = () => {
       window.removeEventListener("unload", onClose);
-      window.removeEventListener("focus", onFocus);
       this.destroy();
     };
     window.addEventListener("unload", onClose);