[llvm] [libcxx] remove linux buildkite builders entirely (PR #73825)

[Louis Dionne via llvm-commits]

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@@ -101,20 +101,6 @@ environment_definitions:
 
 
 steps:
-- label: Bootstrapping build
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ldionne wrote:

I think we can remove the `linux_agent` definition above now!

https://github.com/llvm/llvm-project/pull/73825