Manipulation: Remove a TODO comment in favor of tracking in jquerygh-…

…5298

jquerygh-5298 is about analysing `push.apply` & `jQuery.merge` usage more
comprehensively.

src/manipulation/domManip.js

@@ -65,11 +65,6 @@ function domManip( collection, args, callback, ignored ) {
 
 					// Keep references to cloned scripts for later restoration
 					if ( hasScripts ) {
-
-						// TODO: check if this can be replaced with
-						// `push.apply( scripts, getAll( node, "script" ) )`
-						// but remember about gh-4320. When looking into it,
-						// perhaps simplify jQuery.merge itself.
 						jQuery.merge( scripts, getAll( node, "script" ) );
 					}
 				}