h265parse: Don't duplicate VPS/SPS/PPS per config-interval if exists

Don't need to manually insert VPS/SPS/PPS since inband data could be useable.

Also fixes #824
3 jobs for issue-824 in 8 minutes and 43 seconds (queued for 4 minutes and 44 seconds)
Status Job ID Name Coverage
  Preparation
passed #53775
manifest

00:00:21

 
  Build
passed #53776
build fedora x86_64

00:04:30

 
  Full Builds
passed #53777
build android arm64 api28

00:03:50