fix: remove early CLV 1.2.0 features

[CroaBeast]

Summary

• remove H2 database backend from CLV 1.1.6
• remove AxBoosters, AxHoes and AxPickaxes hooks from CLV 1.1.6
• keep 1.2.0 feature work out of the 1.1.6 release line

Commits

• fix: remove early CLV 1.2.0 features

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[review-me-code]

Pull request overview

This PR removes CLV 1.2.0 features (H2 database, AxBoosters/AxHoes/AxPickaxes hooks) from the 1.1.6 release line. The diff is clean and consistent: deleted H2 database class and dependency, removed all three Ax* hook classes and their plugin dependencies, stripped out the external multiplier logic, and cleaned up config/plugin.yml. No concerns with the changes — they align with the stated goal of keeping 1.2.0 work out of 1.1.6.

Changes:

• Removed H2 database backend (DatabaseFactory.H2 class, h2 dependency, h2 config field)
• Removed AxBoosters, AxHoes, and AxPickaxes hooks and their dependencies
• Removed external multiplier logic in HookManager and BaseSystem.getMultiplier()
• Cleaned up plugin.yml softdepend and libraries sections
• Removed axhoes-breaking and axpick-breaking earn-exp sources

Reviewed changes

• Low src/main/java/com/bitaspire/cyberlevels/cache/Config.java - Database type default comment may be stale
  The fallback default for database type in Config.java still references MYSQL but the description says it falls back to file storage. This is cosmetic but worth verifying the behavior is correct after removing H2.

Reviewed 15 changed files in this pull request and generated 1 inline comment.

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Generated by pull_request.opened.

[review-me-code]

This change removes the external multiplier entirely. Confirm that getMultiplier() in BaseSystem no longer needs the system.main.hookManager reference, and that no other code path depends on externalMultiplier().

Suggested change

	return multiplier == 0 ? 1 : multiplier;
	return multiplier == 0 ? 1 : multiplier;