[mod] plugins: activate tracker url plugin by default

With the new implementation for removing tracker arguments from URLs, we use the
tracker definitions of the ClearURLs project [1].  These definitions are
regularly updated and significantly improve data protection, which is why we
should now also enable this plugin by default.

[1] https://github.com/ClearURLs

Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>

searx/settings.yml

@@ -245,7 +245,7 @@ plugins:
     active: false
 
   searx.plugins.tracker_url_remover.SXNGPlugin:
-    active: false
+    active: true
 
 
 # Configuration of the "Hostnames plugin":