In systemd >= 218, the udev_set_log_fn method has been marked deprecated and turned into a no-op. Nothing in the udev client library will print to stderr by default anymore, so we can just stop installing a logging hook for new enough udev.
I noticed this typo while configuring on a freshly-installed machine. * m4/virt-udev.m4: Correct pciaccess name.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>