[Dox]

Originally Posted by Blizzard Entertainment

We have become aware that the recently added Metropolis LE GSL tournament map is causing performance issues for some players. We’ve investigated the cause of these issues, and it has been determined that significant alteration of the map will be required to address them. As a fair and high quality competitive experience is very important to us, it will be necessary to remove the map from the ladder while these issues are resolved. The map is scheduled to be removed from the ladder during next week’s maintenance period. We will be cooperating with the map creator in an effort resolve the performance issues, and we hope to see Metropolis LE return to the ladder in a future season.

For those who still wish to play games on this map, it will continue to remain available via the custom game interface.

Source: http://us.battle.net/sc2/en/forum/topic/4496750749