This old forumpost describes how to remove the input-field from the page templates alright.
However it remains as output on the /store/order-status/ordernumber-page & in the emails (order confirmation etc.) sent.
you can still see the line:
"State/Province/Region: CLICK TO SELECT"
It still resides in SHIPPINGINFO.
Where can I please change this, so that "State/Province/Region: CLICK TO SELECT" doesnt appear anymore also in the output?