Stop aligning output to 16

[bates64]

No need to do this anymore given that decomp has proper SBN support now.

Changing this will probably break the matching tests so will need to make some changes there.

https://github.com/nanaian/mamar/blob/aba939ba2c9ed2481af56c9a16f4b0ae53ffcc11/pm64/src/bgm/en.rs#L283