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

[via llvm-commits]

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

>From 5a11a7998d975dd9286df9c74bb2b9ed161e3a54 Mon Sep 17 00:00:00 2001
From: eric <eric at efcs.ca>
Date: Wed, 29 Nov 2023 12:18:00 -0500
Subject: [PATCH 1/2] remove linux buildkite builders entirely

---
 .github/workflows/libcxx-build-and-test.yaml |  4 ++++
 libcxx/utils/ci/buildkite-pipeline.yml       | 14 --------------
 2 files changed, 4 insertions(+), 14 deletions(-)

diff --git a/.github/workflows/libcxx-build-and-test.yaml b/.github/workflows/libcxx-build-and-test.yaml
index dccfe54d4646767..5204fb4569ed309 100644
--- a/.github/workflows/libcxx-build-and-test.yaml
+++ b/.github/workflows/libcxx-build-and-test.yaml
@@ -158,6 +158,10 @@ jobs:
           'generic-no-wide-characters',
           'generic-static',
           'generic-with_llvm_unwinder'
+          # TODO Find a better place for the benchmark and bootstrapping builds to live. They're either very expensive
+          # or don't provide much value since the benchmark run results are too noise on the bots.
+          'benchmarks',
+          'bootstrapping-build',
         ]
         machine: [ 'libcxx-runners-8' ]
         std_modules: [ 'OFF' ]
diff --git a/libcxx/utils/ci/buildkite-pipeline.yml b/libcxx/utils/ci/buildkite-pipeline.yml
index 3c49247ab5aeeb9..7077f754220eb21 100644
--- a/libcxx/utils/ci/buildkite-pipeline.yml
+++ b/libcxx/utils/ci/buildkite-pipeline.yml
@@ -101,20 +101,6 @@ environment_definitions:
 
 
 steps:
-- label: Bootstrapping build
-  command: libcxx/utils/ci/run-buildbot bootstrapping-build
-  env:
-    <<: *common_env
-  <<: *linux_agent
-  <<: *common
-
-- label: Benchmarks
-  command: libcxx/utils/ci/run-buildbot benchmarks
-  env:
-    <<: *common_env
-  <<: *linux_agent
-  <<: *common
-
 - group: ':windows: Windows'
   steps:
   - label: Clang-cl (DLL)

>From 7f3962b3f0809e27735ebf21d2bcdd41bbe5a58f Mon Sep 17 00:00:00 2001
From: eric <eric at efcs.ca>
Date: Wed, 29 Nov 2023 13:54:54 -0500
Subject: [PATCH 2/2] Fully remove the GCE buildkite builders on linux

---
 libcxx/utils/ci/buildkite-pipeline.yml | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/libcxx/utils/ci/buildkite-pipeline.yml b/libcxx/utils/ci/buildkite-pipeline.yml
index 7077f754220eb21..db870a3a464527e 100644
--- a/libcxx/utils/ci/buildkite-pipeline.yml
+++ b/libcxx/utils/ci/buildkite-pipeline.yml
@@ -43,14 +43,9 @@ definitions:
 
 # Define agents using YAML anchors to reduce duplication
 agents_definitions:
-  _linux_agent: &linux_agent
-    agents:
-      queue: libcxx-builders
-      os: linux
   _windows_agent: &windows_agent
     agents:
       queue: windows
-
   # Mac OS Builders
   _mac_agent_x86: &mac_agent_x86
     agents: