Remove unsupported *.dartsearch.net rule

[fmarier]

The *.dartsearch.net rule, introduced in #726 is using the wrong query string parameter (red which belongs to t.myvisualiq.com instead of ds_dest_url which belongs to dartsearch) because it attempts to do two debounces in one go.

Furthermore, clickserve.dartsearch.net actually requires brave/brave-browser#22429 to be implemented first because it doesn't encode its ds_dest_url in the way that the debouncer's redirect action expects it to.