Do not add launch site

[siimav]

USRockets/GameData/RN_US_Rockets/RN_RSS_WS.cfg

Line 7 in 9ec718f

name = us_whitesands

This is already done in RSS itself and thus has to take extra steps not to cause conflicts.
https://github.com/KSP-RO/RealSolarSystem/blob/950461b443eec45160a11b5f5e94737a5f30da79/GameData/RealSolarSystem/LaunchSites.cfg#L755-L759

[raidernick]

@siimav it can probably be removed from here then as it's better to be in RSS than here. I didn't even realize I forgot to remove it from here. I'll do it on the next release, but for now it doesn't actually conflict because of how I implemented it in RSS. RSS is just overwriting this with the same thing.

[raidernick]

removed in 95df11c