Remove clic2000.net from Private Section

[ghost]

Hi,

We are letting go an unused domain name on October 22th and would like to clean up before.
This PR simply removes the entry I made in the first time to the list. I already removed the _psl TXT entry from the zone file.

Thanks in advance.
Best,

[dnsguru]

Undoes #1010

[dnsguru]

Approving;

• submitter same on add/remove
• no conflict w base
• tests pass
• follows sorting guidelines

Also, @Mthld thank you for cleaning up after yourself - hopefully this example will be followed by others in the future