disable/prevent start of gpg-agent service?

[Ben]

Asi found out after having installed the latest gnupg release on Windows 7 a gnupg service "gpg-agent" always is running (now) in background.

It seems to be installed automatically without letting the user a choice.

Can I disable this service?

Can I de-install this service permanently?

I need gnupg only occasionally for on-demand en-/de-cryption.

Thank you
Ben