Fixed issue with changing url of DuckDuckGo search provider

- it kept reverting to original URL if user changed it

src/lib/opensearch/searchenginesmanager.cpp

@@ -70,12 +70,6 @@ void SearchEnginesManager::loadSettings()
         en.shortcut = query.value(3).toString();
         en.suggestionsUrl = query.value(4).toString();
 
-        // TODO: Remove when releasing new version
-        //       and move into profile updater
-        if (en.name == "DuckDuckGo") {
-            en.url = "https://duckduckgo.com/?q=%s&t=qupzilla";
-        }
-
         m_allEngines.append(en);
     }