Clean up for fedora shell runner

We're not using the fedora docker anymore (because I can't get it to
work anymore and don't remember how I got it to work to begin with).
Thus, use the fedora shell executor to run CI so we don't need the
image or to wget lots of stuff because it's already installed.
3 jobs for master in 16 minutes and 29 seconds (queued for 1 second)
latest
Status Job ID Name Coverage
  Test
passed #1952
linux
linux-runner

00:08:02

passed #1951
osx
osx-runner

00:08:26

passed #1950
linux
linux-runner

00:07:31