Newly added airports in tzmaps branch do not exist in official listing

[ysangkok]

trafficstars

Many of these new airports added in commit 9b88e0b4b2c76f96d7194e487cbf092bbb23baf0 don't exist in the official listing:

• https://www.iata.org/en/publications/directories/code-search?airport.search=ZZF
• https://www.iata.org/en/publications/directories/code-search?airport.search=ZWK (Is this supposed to be Suwalki Airport? Polish Wikipedia says it is QPH, but IATA doesn't have that: https://www.iata.org/en/publications/directories/code-search?airport.search=QPH )

Some of them do exist:

• https://www.iata.org/en/publications/directories/code-search?airport.search=ZZE
• https://www.iata.org/en/publications/directories/code-search?airport.search=YAE