libweston: Remove old timeline parts

As this is no longer in use, remove it.

Signed-off-by: Marius Vlad <marius.vlad@collabora.com>
2 jobs for scope-type-timeline-subscriber-fancy in 1 minute and 39 seconds (queued for 6 seconds)
Status Job ID Name Coverage
  Container Prep
passed #477657
container_prep

00:00:36

 
  Build
passed #477658
build-native-meson

00:01:02