(I see Buffalo have also done this on the HD-CXU2 drives !!!!!)
Couldn't agree more - The Removal Util should and needs to be provided.
Surely it's your customers choice if they want part of their drives used up by software that they may not use or indeed need.
Do the right thing - and follow the example of U3
Provide the removal tool for download so we can rid ourselves of the CDFS partition once and for all and reclaim the full space on the drive.