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 32 seconds (queued for 52 seconds)
Status Job ID Name Coverage
  Container Prep
passed #478575
container_prep

00:00:41

 
  Build
passed #478576
build-native-meson

00:00:51