all: Use ->remove() instead of ->outertext = ''

simplehtmldom 1.9 introduced new functions to recursively remove
nodes from the DOM. This allows removing elements without the need
to re-load the document by using $html->load($html->save()), which
is very inefficient.

Find more information about remove() at
https://simplehtmldom.sourceforge.io/docs/1.9/api/simple_html_dom_node/remove/

bridges/XenForoBridge.php

@@ -193,7 +193,7 @@ class XenForoBridge extends BridgeAbstract {
 
 			// Remove script tags
 			foreach($content->find('script') as $script) {
-				$script->outertext = '';
+				$script->remove();
 			}
 
 			$item['content'] = $content->innertext;