Remove AnyCoin Direct listing — acquired by Finst; platform wind-down announced

[devdavidejesus]

Companion to #4684

Evidence

The listed URL https://anycoindirect.eu currently redirects (HTTP 301) to https://finst.com/.

Acquisition by Finst (Nov 2024) and announced platform wind-down

Finst acquired AnyCoin Direct on November 12, 2024. The acquiring company has publicly stated that the AnyCoin Direct platform will shut down, with users transitioning to Finst.

• Finst press release: https://finst.com/en/blog/finst-news/finst-and-anycoin-direct-join-forces
• AnyCoin Direct's own FAQ confirming the upcoming shutdown: https://anycoindirect.eu/en/support/anycoin-direct/finst

Finst is not currently listed on bitcoin.org/en/exchanges. If maintainers consider the destination platform a suitable replacement for European users, that would be a separate listing decision; this PR addresses only the removal of the URL that no longer resolves to a functioning AnyCoin Direct platform.

Criterion

Per docs/adding-exchanges.md, "Site functionality" is the first review criterion. A listed URL that redirects to a different exchange — following a publicly announced platform wind-down — fails that criterion.

Reproduction

curl -sIL https://anycoindirect.eu | head -10

The first response shows HTTP/2 301 with location: https://finst.com, followed by HTTP/2 200 on the Finst homepage.