Remove / Delete asset locations from WHD

Hello,

I have a question similar to this post from some time ago:

https://thwack.solarwinds.com/message/233114#233114

We also need to delete asset locations as we too had locations mapped to one attribute, changed the mapping to use a second attribute, and now both attributes show up in the location dropdown. How would this be done in our case, we have the latest version of WHD.