* Use Bukkit Registry API where possible (#2573)
(cherry picked from commit 292dae65cb01929dc2158f09bdb19fdc82b3669f)
* compile against 1.21 instead of 1.21.3
* remove method
* Revert "Use Bukkit Registry API where possible (#2573)"
This reverts commit f260e19d2976de1ceab9dc7d43a633817723f434.
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Co-authored-by: Maddy Miller <mnmiller1@me.com>