Remove Yenisei from public multiplayer games (#1874)

The map is very large and the game lagged a lot on this map during
playtests. So remove it from public lobbies.

- [x] I have added screenshots for all UI updates
- [x] I process any text displayed to the user through translateText()
and I've added it to the en.json file
- [x] I have added relevant tests to the test directory
- [x] I confirm I have thoroughly tested these changes and take full
responsibility for any bugs introduced

regression is found:

evan

src/server/MapPlaylist.ts

@@ -46,7 +46,6 @@ const frequency: Partial<Record<GameMapName, number>> = {
   SouthAmerica: 5,
   StraitOfGibraltar: 5,
   World: 8,
-  Yenisei: 6,
 };
 
 type MapWithMode = {