Gate the macro icon hook behind a config flag

Run the Blizzard_MacroUI hook only when C.disabled["macroicons"] is
"1".

modules/turtle-wow.lua

@@ -355,24 +355,25 @@ pfUI:RegisterModule("turtle-wow", function ()
     end
   end)
 
-  HookAddonOrVariable("Blizzard_MacroUI", function()
-    if type(UpdateMacroIconFilenames) ~= "function" then return end
-    function _G.UpdateMacroIconFilenames()
-      wipe(MACRO_ICON_FILENAMES)
-      local provider = CreateAndInitFromMixin(IconDataProviderMixin, IconDataProviderExtraType.Spellbook)
-      local seen = {}
-      for i = 1, provider:GetNumIcons() do
-        -- uppercase, prefix-stripped basename, matching Blizzard's original
-        local icon = string.gsub(string.upper(provider:GetIconByIndex(i)), "INTERFACE\\ICONS\\", "")
-        if not seen[icon] then
-          seen[icon] = true
-          table.insert(MACRO_ICON_FILENAMES, icon)
+  if C.disabled["macroicons"] == "1" then
+    HookAddonOrVariable("Blizzard_MacroUI", function()
+      if type(UpdateMacroIconFilenames) ~= "function" then return end
+      function _G.UpdateMacroIconFilenames()
+        wipe(MACRO_ICON_FILENAMES)
+        local provider = CreateAndInitFromMixin(IconDataProviderMixin, IconDataProviderExtraType.Spellbook)
+        local seen = {}
+        for i = 1, provider:GetNumIcons() do
+          -- uppercase, prefix-stripped basename, matching Blizzard's original
+          local icon = string.gsub(string.upper(provider:GetIconByIndex(i)), "INTERFACE\\ICONS\\", "")
+          if not seen[icon] then
+            seen[icon] = true
+            table.insert(MACRO_ICON_FILENAMES, icon)
+          end
         end
+        provider:Release()
       end
-      provider:Release()
-    end
-  end)
-
+    end)
+  end
 
   -- add turtle-wow sell values
   pfSellData = {