I use that repository for testing new packages, but also for keeping other personal stuff unrelated to the "Linux On My Samsung" project.
I suggest to remove it from your software sources, because it may also contain broken packages from time to time. To do so, just delete the file '/etc/apt/sources.list.d/voria-archive-oneiric.list'.
Anyway, 'samsung-tools' from my testing repo does not have any dependency from the same repo. To get the latest testing version available, you can just go to the PPA page (https://launchpad.net/~voria/+archive/archive/+packages
), download the .deb file you want and install it directly by clicking it.
Please consider a little donation to keep the 'Linux On My Samsung' project up and running. Thank you!