Revert "pull: Add tls-client-cert-{path,key}"

This reverts commit 94f9ee7bce.
Doesn't actually work, see
https://bugzilla.gnome.org/show_bug.cgi?id=334021

src/libostree/ostree-fetcher.c

@@ -79,8 +79,6 @@ struct OstreeFetcher
 
   GFile *tmpdir;
 
-  GTlsCertificate *client_cert;
-
   SoupSession *session;
   SoupRequester *requester;
 
@@ -109,7 +107,6 @@ ostree_fetcher_finalize (GObject *object)
 
   g_clear_object (&self->session);
   g_clear_object (&self->tmpdir);
-  g_clear_object (&self->client_cert);
 
   g_hash_table_destroy (self->sending_messages);
   g_hash_table_destroy (self->message_to_request);
@@ -178,9 +175,6 @@ ostree_fetcher_init (OstreeFetcher *self)
         }
     }
 
-  if (g_getenv ("OSTREE_DEBUG_HTTP"))
-    soup_session_add_feature (self->session, (SoupSessionFeature*)soup_logger_new (SOUP_LOGGER_LOG_BODY, 500));
-
   self->requester = (SoupRequester *)soup_session_get_feature (self->session, SOUP_TYPE_REQUESTER);
   g_object_get (self->session, "max-conns-per-host", &max_conns, NULL);
   self->max_outstanding = 3 * max_conns;
@@ -210,14 +204,6 @@ ostree_fetcher_new (GFile                    *tmpdir,
   return self;
 }
 
-void
-ostree_fetcher_set_client_cert (OstreeFetcher *fetcher,
-                                GTlsCertificate *cert)
-{
-  g_clear_object (&fetcher->client_cert);
-  fetcher->client_cert = g_object_ref (cert);
-}
-
 static void
 on_request_sent (GObject        *object, GAsyncResult   *result, gpointer        user_data);
 
@@ -229,13 +215,6 @@ ostree_fetcher_process_pending_queue (OstreeFetcher *self)
          self->outstanding < self->max_outstanding)
     {
       OstreeFetcherPendingURI *next = g_queue_pop_head (&self->pending_queue);
-
-      if (self->client_cert)
-        {
-          gs_unref_object SoupMessage *message = soup_request_http_get_message ((SoupRequestHTTP*)next->request);
-          g_object_set (message, "tls-certificate", self->client_cert, NULL);
-        }
-
       self->outstanding++;
       soup_request_send_async (next->request, next->cancellable,
                                on_request_sent, next);