Remove debug code, rank1/rank2 works.

diff --git a/core.lua b/core.lua
index abec712..3c2ddc5 100644
--- a/core.lua
+++ b/core.lua
@@ -1700,7 +1700,6 @@ do

 					-- If we have it in the mapping, set the lower rank spell to known
 					if overwritemap[SpellID] then
-					self:Print("Overwrite spell found." .. SpellID)
 						self:Print("Marking " .. overwritemap[SpellID])
 						local overwriterecipe = recipe_list[overwritemap[SpellID]]
 						if overwriterecipe then