external/build_all.sh script is broken

[judovana]

Hi!

I do not understand purpose of https://github.com/adoptium/aqa-tests/blob/master/external/build_all.sh. I addition, it seems it is unused, because - per https://github.com/adoptium/aqa-tests/pull/5553#issuecomment-2346692535 - it was broken since 6.February.2024, and nobody noticed.

of course I may be absolutely missing some point, and despite several quiestions on several places, I never got an reply. Looking forward for explanation!