Don't load Astrolabe until its included

diff --git a/MapUtils.lua b/MapUtils.lua
index be2a9db..7accce3 100644
--- a/MapUtils.lua
+++ b/MapUtils.lua
@@ -2,7 +2,9 @@ local addonName, addon = ...
 local L = addon.L

 local astrolabe = DongleStub("Astrolabe-1.0")
-local mapdata = LibStub("LibMapData-1.0")
+
+--TODO: Package and install this
+--local mapdata = LibStub("LibMapData-1.0")

 local PI2 = math.pi * 2