diff --git a/build/.outer-loop-build.yml b/build/.outer-loop-build.yml
deleted file mode 100644
index 28034b32fb..0000000000
--- a/build/.outer-loop-build.yml
+++ /dev/null
@@ -1,111 +0,0 @@
-################################################################################
-# ML.NET's outer loop build that will run all tests
-################################################################################
-
-# no PR builds
-pr: none
-
-# no CI builds
-trigger: none
-
-# scheduled trigger, runs at UTC 8:00 every day which is midnight of GMT-8
-schedules:
-- cron: "0 8 * * *"
-  displayName: outer loop build at midnight
-  branches:
-    include:
-    - main
-    - feature/*
-    - release/*
-  always: true
-
-
-resources:
-  containers:
-  - container: CentosContainer
-    image: mcr.microsoft.com/dotnet-buildtools/prereqs:centos-stream8-mlnet
-
-  - container: UbuntuContainer
-    image: mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-18.04-mlnet
-
-jobs:
-- template: /build/ci/job-template.yml
-  parameters:
-    name: Centos_x64_Net60
-    buildScript: ./build.sh
-    container: CentosContainer
-    customMatrixes:
-      Debug_Build:
-        _configuration: Debug
-        _config_short: DI
-        _includeBenchmarkData: false
-      Release_Build:
-        _configuration: Release
-        _config_short: RI
-        _includeBenchmarkData: true
-    pool:
-      vmImage: ubuntu-18.04
-
-- template: /build/ci/job-template.yml
-  parameters:
-    name: Ubuntu_x64_Net60
-    buildScript: ./build.sh
-    container: UbuntuContainer
-    pool:
-      vmImage: ubuntu-18.04
-
-- template: /build/ci/job-template.yml
-  parameters:
-    name: MacOS_x64_Net60
-    buildScript: ./build.sh
-    pool:
-      vmImage: macOS-10.15
-
-- template: /build/ci/job-template.yml
-  parameters:
-    name: Windows_x64_Net60
-    buildScript: build.cmd
-    customMatrixes:
-      Debug_Build:
-        _configuration: Debug
-        _config_short: DI
-        _includeBenchmarkData: false
-      Release_Build:
-        _configuration: Release
-        _config_short: RI
-        _includeBenchmarkData: true
-    pool:
-      vmImage: windows-2019
-
-- template: /build/ci/job-template.yml
-  parameters:
-    name: Windows_x64_Net60
-    buildScript: build.cmd
-    pool:
-      vmImage: windows-2019
-
-- template: /build/ci/job-template.yml
-  parameters:
-    name: Windows_x64_NetFx48
-    buildScript: build.cmd
-    customMatrixes:
-      Debug_Build:
-        _configuration: Debug
-        _config_short: DFX
-        _includeBenchmarkData: false
-        _targetFramework: net48
-      Release_Build:
-        _configuration: Release
-        _config_short: RFX
-        _includeBenchmarkData: false
-        _targetFramework: net48
-    pool:
-      vmImage: windows-2019
-
-- template: /build/ci/job-template.yml
-  parameters:
-    name: Windows_x86_Net60
-    architecture: x86
-    buildScript: build.cmd
-    pool:
-      vmImage: windows-2019
diff --git a/build/libomp.rb b/build/libomp.rb
deleted file mode 100644
index cb944bf4f5..0000000000
--- a/build/libomp.rb
+++ /dev/null
@@ -1,64 +0,0 @@
-# typed: false
-# frozen_string_literal: true
-
-class Libomp < Formula
-  desc "LLVM's OpenMP runtime library"
-  homepage "https://openmp.llvm.org/"
-  url "https://releases.llvm.org/7.0.0/openmp-7.0.0.src.tar.xz"
-  sha256 "30662b632f5556c59ee9215c1309f61de50b3ea8e89dcc28ba9a9494bba238ff"
-
-  bottle do
-    sha256 cellar: :any, mojave:      "c8788028105e9ec32e29bcdba8c7b550c2afd96b3f0a7bd0d6b6136a8729174a"
-    sha256 cellar: :any, high_sierra: "046f659ad8a2cc336049a1e7f7be0dac2f2e28ce322409f10396f9582b94b660"
-    sha256 cellar: :any, sierra:      "ba1b9a78326c671fb864a95d93f2fcf47f3af2ef8f12f6c7ee54a7c0cf7802b4"
-    sha256 cellar: :any, el_capitan:  "0ea5b6ae3e9e0b32a2b49a7430fb0f653430107164089b067a7b0039e91ce527"
-  end
-
-  depends_on "cmake" => :build
-
-  def install
-    system "cmake", ".", "-DCMAKE_POLICY_VERSION_MINIMUM=3.5", *std_cmake_args
-    system "make", "install"
-    system "cmake", ".", "-DLIBOMP_ENABLE_SHARED=OFF", "-DCMAKE_POLICY_VERSION_MINIMUM=3.5", *std_cmake_args
-    system "make", "install"
-  end
-
-  def caveats
-    <<~EOS
-      On Apple Clang, you need to add several options to use OpenMP's front end
-      instead of the standard driver option. This usually looks like
-        -Xpreprocessor -fopenmp -lomp
-
-      You might need to make sure the lib and include directories are discoverable
-      if #{HOMEBREW_PREFIX} is not searched:
-
-        -L#{opt_lib} -I#{opt_include}
-
-      For CMake, the following flags will cause the OpenMP::OpenMP_CXX target to
-      be set up correctly:
-        -DOpenMP_CXX_FLAGS="-Xpreprocessor -fopenmp -I#{opt_include}" -DOpenMP_CXX_LIB_NAMES="omp" -DOpenMP_omp_LIBRARY=#{opt_lib}/libomp.dylib
-    EOS
-  end
-
-  test do
-    (testpath/"test.cpp").write <<~EOS
-      #include <omp.h>
-      #include <array>
-      int main (int argc, char** argv) {
-        std::array<size_t,2> arr = {0,0};
-        #pragma omp parallel num_threads(2)
-        {
-            size_t tid = omp_get_thread_num();
-            arr.at(tid) = tid + 1;
-        }
-        if(arr.at(0) == 1 && arr.at(1) == 2)
-            return 0;
-        else
-            return 1;
-      }
-    EOS
-    system ENV.cxx, "-Werror", "-Xpreprocessor", "-fopenmp", "test.cpp",
-           "-L#{lib}", "-lomp", "-o", "test"
-    system "./test"
-  end
-end