Remove tile.openstreetmap.org from listing

[pnorman]

MapTilesDownloader/UI/main.js

Line 28 in 69f48a7

"Open Street Maps": "https://a.tile.openstreetmap.org/{z}/{x}/{y}.png",

The OSMF tile usage policy states

In particular, downloading significant areas of tiles at zoom levels 17 and higher for offline or later usage is forbidden without prior consultation with a System Administrator.

I didn't identify MapTilesDownloader as a heavy user in openstreetmap/operations#371, but it's still doing something not allowed.

[AliFlux]

There's a disclaimer in the README.md that states that downloading maps is subject to TOCs of the providers. + the default config zoom is capped at 15.

[Firefishy]

Also see openstreetmap/operations#737