Yes, thank you mason, that worked. I removed the non-OSS repository, and ran
a distro update, which got rid of the remaining "non-OSS" packages. Here's a
screen shot of the current setup (attached).
One step closer to libreSUSE, although I would imagine that some of
openSUSE's "OSS" packages aren't going to meet the strict FSF definition of
libre. This will take some time to audit their packages and see what's truly
free and what's not. But so far, everything still seems to be working just
fine on the laptop and with KDE Plasma, which is a far better outcome than I
expected.
If anyone ever wants to replicate this work, the instructions to compile and
install the Linux-libre kernel on openSUSE are here:
http://www.anahuac.eu/linux-libre-on-opensuse/
There were 3 additional dependencies that I needed in order to compile the
kernel that the author of that page had not needed back in 2015: bc,
libopenssl-devel, and libelf-devel
