[PATCH] D144934: [clang] drop buggy use of `-serialize-diagnostics` flag

[Fangrui Song via Phabricator via cfe-commits]

MaskRay added a comment.

For pure test updates, best to include `[test] `in the subject :)


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D144934/new/

https://reviews.llvm.org/D144934