There seems to be a bug that prevents removing query params from a Stripe resource query. If I add a second param, the removal option (red x) will be enabled for both, but once there's only 1 remaining, the removal option will be disabled (grey x).
Thanks for flagging this to us, @henrymeiklejohn ! I believe the intention here was to ensure there was at least one query param in the resource query so it wouldn't error out when run, but I definitely see how this could be a frustrating experience when trying to reconfigure the query. I'll flag it with our Product team!