Unrolled build for rust-lang#115885

Rollup merge of rust-lang#115885 - RalfJung:dont-ignore-ice, r=oli-obk

don't globally ignore rustc-ice files

Reverts a change that happened in rust-lang#114586 but is unrelated to that PR and wasn't discussed.

ICE files appearing is somewhat of a nuisance, but I'd rather clean them up than have them accumulate in my source folder. `@oli-obk` if you want to ignore them you can add them to your local `.git/info/exclude`.

.gitignore

@@ -58,7 +58,6 @@ build/
 \#*
 \#*\#
 .#*
-rustc-ice-*.txt
 
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