If you wish to only have Felucca just register this line.
RegisterMap( 0, 0, 0, 7168, 4096, 0, "Felucca",MapRules.FeluccaRules );
<index>, <mapID>, <fileIndex>, <width>, <height>, <season>, <name>, <rules>
Felucca <mapID>, <fileIndex> = 0, 0
Trammel <mapID>, <fileIndex> = 1, 1
-Grim