Revert "Rollup merge of #136127 - WaffleLapkin:dyn_ptr_unwrap_cast, r=compiler-errors" #138892
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...not permanently tho. Just until we can land something like #138542, which will fix the underlying perf issues (#136127 (comment)). I just don't want this to land on beta and have people rely on this behavior if it'll need some reworking for it to be implemented performantly.
r? @WaffleLapkin or reassign -- sorry for reverting ur pr! i'm working on getting it re-landed soon :>