removes the game server from the local storage; returns true if one was removed
public static bool RemoveFavoriteGame(AppId_t nAppID, uint nIP, ushort nConnPort, ushort nQueryPort, uint unFlags) { InteropHelp.TestIfAvailableClient(); return NativeMethods.ISteamMatchmaking_RemoveFavoriteGame(nAppID, nIP, nConnPort, nQueryPort, unFlags); }