KiCAD automatically embeds the tool list when you generate a drill file. I don't think there's any way to tell KiCAD NOT to embed the tool data. See example:
(Yes, the Excellon drill file is a human-readable ASCII text file - just like the other KiCAD files.)
To create a drill file, click "File" > "Plot", then click on the "Generate Drill File" button. I think most fab houses are asking for separate files for plated-through holes (PTH) and non-plated through (NPTH) but your vendor may be different. Remember that the fab house needs the DRILL FILE, even though you may use a MAP FILE to review and check your work.