🧹 Remove unused imports in Config.java

[sayore]

🎯 What: Removed unused imports from Config.java
💡 Why: net.minecraft.world.item.Item and other unused imports (like Set, Collectors, SubscribeEvent, etc.) cluttered the file. Removing them improves maintainability and cleans up the codebase.
✅ Verification: Verified via gradle build and gradle test that compilation succeeds and tests pass.
✨ Result: A cleaner Config.java file with no unused imports.

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PR created automatically by Jules for task 12590609649004918545 started by @sayore

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