Fix NO_UNDEFINED build with statically linked fb

Stop trying to link to a shared library we no longer build

Fixes: commit c1703cdf - "xfree86: Link fb statically"
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
3 jobs for master in 10 minutes and 53 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Docker Image
passed #471203
debian-testing

00:05:26

 
  Build And Test
passed #471204
autotools-build-and-test

00:05:27

passed #471205
meson-build-and-test

00:01:51