All of these are cases where EU was removing state regulations in favor of their own regulations. I don't think this falls under deregulation at all, it's just centralization.
But this is a case of countries removing legislation from you.
I think it is extremely hard to argue that this was a case of the EU deregulating anything. What happened was the EU started to regulate more, which invalidated the regulations of states.
No, it's a case of the countries which are in the EU all making their legislation equivalent because they all agreed to let the EU be the place where they figure out how to do that.
The EU is specifically the mechanism by which the countries streamline their legislative differences.