I'm trying to modify the following list of export formats that appear when you click the export link at the bottom an analysis object.

Here's the list that pops up when you click export. I'd like to keep just PDF and Excel as options and remove the rest from the list.

I looked in Dashboard properties and couldn't find anything that allows me to disable certain formats from the list like Web-Archive, Data, Web Archive or Powerpoint.
Does anyone know of a .xml config file on the server that allows me to modify this list, removing certain items?
Thank you for any assistance or suggestions.