matrix: Only set password, device name and login id for new clients

This information get's saved into the DB and keyring anyway, so we
don't need to set it each time.

src/ev-matrix.c

@@ -212,16 +212,6 @@ on_matrix_open (GObject *object, GAsyncResult *result, gpointer user_data)
   }
   cm_client_set_sync_callback (client, on_client_sync, NULL, NULL);
 
-  cm_client_set_password (client, password);
-  cm_client_set_device_name (client, EV_PROJECT);
-
-  account = cm_client_get_account (client);
-  if (!cm_account_set_login_id (account, username)) {
-    g_critical ("'%s' isn't a valid username", username);
-    ev_quit ();
-    return;
-  }
-
   g_print ("Logging in %s\n", username);
   cm_client_set_enabled (client, TRUE);
   joined_rooms = cm_client_get_joined_rooms (client);