RFR: 8351277: Remove pipewire from AIX build [v3]

[Matthias Baesken]

> Seems Wayland is not supported on AIX, so we most likely do not need to build pipewire on AIX and can remove it from the build.
> Reason is that pipewire updates can break the AIX build, so better avoid it if possible.
> 
> To check if it works, I move the 'pipewire/include' folder away, and the build still worked on AIX.

Matthias Baesken has updated the pull request incrementally with one additional commit since the last revision:

  add Java_sun_awt_screencast_ScreencastHelper_getRGBPixelsImpl JNI function in AIX case

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Changes:
  - all: https://git.openjdk.org/jdk/pull/24009/files
  - new: https://git.openjdk.org/jdk/pull/24009/files/e7941d37..79ec8a7a

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=24009&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=24009&range=01-02

  Stats: 15 lines in 1 file changed: 14 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/24009.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/24009/head:pull/24009

PR: https://git.openjdk.org/jdk/pull/24009