There is an updated pull request by oreo639 against master on the void-packages repository

https://github.com/oreo639/void-packages mozjs91
https://github.com/void-linux/void-packages/pull/41296

mozjs91: remove package
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#### Testing the changes
- I tested the changes in this PR: **briefly**

Nothing depends on it, also allows us to avoid rebuilding it: https://github.com/void-linux/void-packages/pull/41294

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A patch file from https://github.com/void-linux/void-packages/pull/41296.patch is attached