Rollup merge of #67845 - jumbatm:also-unconst-hack-abs, r=oli-obk
Rollup merge of #67845 - jumbatm:also-unconst-hack-abs, r=oli-obk

Also remove const-hack for abs

Closes #67842.

r? @oli-obk

aidancully/rust,aidancully/rust,aidancully/rust,graydon/rust,graydon/rust,aidancully/rust,graydon/rust,aidancully/rust,graydon/rust,aidancully/rust,graydon/rust,graydon/rust