Auto merge of rust-lang#2846 - oli-obk:rm_borked_test, r=RalfJung

Remove a test that wasn't carrying its weight

See rust-lang#110107 (comment) for discussion.

TLDR: it keeps breaking out of unrelated reasons and the real thing to check (early alloc ids can be tracked without ICEing miri) is hard to check otherwise.

Author: bors