chore: Simplify project by removing the Ant-based build; Maven only is fine

[vorburger]

Triggered by noticing the confusion on #253.

@cstamas I'm sure you're in favour of this... 🤣

@ianopolous would this be cool with you?

[Copilot]

Pull request overview

This PR simplifies the project build system by removing the Ant-based build configuration and retaining only Maven for building and testing. The change removes legacy build infrastructure that was causing confusion, as mentioned in issue #253.

Changes:

• Removed Ant build configuration file (build.xml)
• Removed Ant build and test steps from the CI workflow
• Removed JAR dependencies from the lib/ directory that were used by the Ant build
• Fixed trailing whitespace in the CI workflow file

Reviewed changes

Copilot reviewed 2 out of 8 changed files in this pull request and generated no comments.

File	Description
build.xml	Complete removal of the Ant build configuration file
.github/workflows/ant.yml	Removed Ant build and test steps; retained Maven-based testing
lib/*.jar	Removed JAR dependencies (multibase, multiaddr, multihash, cid, junit, hamcrest) that were managed by Ant

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[ianopolous]

Yep totally fine.

[odisseus]

You should have also updated the readme file, because it still refers to Ant commands. Also, the CI workflow file should probably be renamed.

[manandbytes]

should it enable batch mode with -B and run verify instead?

[vorburger]

SGTM; see #262.

[vorburger]

You should have also updated the readme file, because it still refers to Ant commands. Also, the CI workflow file should probably be renamed.

@odisseus this was done in #255.