[clang-tools-extra] [clangd] Support suppressions for driver diagnostics (PR #182912)

[Aleksandr Platonov via cfe-commits]

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@@ -601,10 +601,6 @@ buildPreamble(PathRef FileName, CompilerInvocation CI,
   const Config &Cfg = Config::current();
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ArcsinX wrote:

This variable is unused now

https://github.com/llvm/llvm-project/pull/182912