BridgeDB's twisted version doesn´t have a `t.w.client.HTTPConnectionPool` class

And as such, bridgedb-0.1.5 with the patches for #11127 (moved) will not run, because it uses twisted.web.client.HTTPConnectionPool to kill disable persistent connections to the reCaptcha API server. While waiting for it to get updated, we need to patch this out to that the HTTPConnectionPool isn't called.