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/OsmAndBlogBridge.php

@@ -51,7 +51,7 @@ class OsmAndBlogBridge extends BridgeAbstract {
 
 	private function cleanupContent($content, ...$removeItems) {
 		foreach ($removeItems as $obj) {
-			if ($obj) $obj->outertext = '';
+			if ($obj) $obj->remove();
 		}
 		foreach ($content->find('img') as $obj) {
 			$obj->src = $this->filterURL($obj->src);