message: Remove backwards compatible build targets.
  Introduced by
  they can be now removed.
  Cr-Commit-Position: refs/heads/master@{#34440}
diff: @@ -525,21 +525,6 @@ if (is_ios || is_mac) {
  ]
  }
  - # For backward compatibility.
  - rtc_source_set("video_objc") {
  - visibility = [ "*" ]
  - public_deps = [ ":opengl_objc" ] # no-presubmit-check TODO(webrtc:8603)
  - }
  - rtc_source_set("ui_objc") {
  - visibility = [ "*" ]
  - allow_poison = [
  - "audio_codecs", # TODO(bugs.webrtc.org/8396): Remove.
  - "default_task_queue",
  - ]
  - public_deps = # no-presubmit-check TODO(webrtc:8603)
  - [ ":opengl_ui_objc" ]
  - }
  -
  rtc_library("metal_objc") {
  visibility = [ "*" ]
  allow_poison = [
  