Use the version of ant shipped in the OpenJDK extension

[mbooth101]

You may not have realised that the OpenJDK extension also contains Java build tools like Ant, this change switches your application to build using that version of Ant so you don't have to maintain it in your own manifest :-)

[flathubbot]

Started test build 27015

[flathubbot]

Build 27015 successful
To test this build, install it from the testing repository:

flatpak install --user https://dl.flathub.org/build-repo/26004/cc.arduino.arduinoide.flatpakref

[A6GibKm]

Thanks, I knew ant from the openjdk manifest sounded familiar :).