Rollup merge of rust-lang#89849 - rusticstuff:remove-xcode-select, r=Mark-Simulacrum

CI: Selecting the Xcode version no longer needed with the macos-11 runners.

It does nothing nowadays since `/Applications/Xcode_12.2.app` does not exist in the GH runner environment and
automatically using the latest version selected by the GH environment is better anyway.

Author: JohnTitor

.github/workflows/ci.yml

@@ -92,9 +92,6 @@ jobs:
       - name: install sccache
         run: src/ci/scripts/install-sccache.sh
         if: success() && !env.SKIP_JOB
-      - name: select Xcode
-        run: src/ci/scripts/select-xcode.sh
-        if: success() && !env.SKIP_JOB
       - name: install clang
         run: src/ci/scripts/install-clang.sh
         if: success() && !env.SKIP_JOB
@@ -322,7 +319,6 @@ jobs:
               SCRIPT: "./x.py dist --stage 2"
               RUST_CONFIGURE_ARGS: "--build=x86_64-apple-darwin --host=aarch64-apple-darwin --target=aarch64-apple-darwin --enable-full-tools --enable-sanitizers --enable-profiler --set rust.jemalloc --set llvm.ninja=false"
               RUSTC_RETRY_LINKER_ON_SEGFAULT: 1
-              SELECT_XCODE: /Applications/Xcode_12.2.app
               USE_XCODE_CLANG: 1
               MACOSX_DEPLOYMENT_TARGET: 11.0
               MACOSX_STD_DEPLOYMENT_TARGET: 11.0
@@ -467,9 +463,6 @@ jobs:
       - name: install sccache
         run: src/ci/scripts/install-sccache.sh
         if: success() && !env.SKIP_JOB
-      - name: select Xcode
-        run: src/ci/scripts/select-xcode.sh
-        if: success() && !env.SKIP_JOB
       - name: install clang
         run: src/ci/scripts/install-clang.sh
         if: success() && !env.SKIP_JOB
@@ -580,9 +573,6 @@ jobs:
       - name: install sccache
         run: src/ci/scripts/install-sccache.sh
         if: success() && !env.SKIP_JOB
-      - name: select Xcode
-        run: src/ci/scripts/select-xcode.sh
-        if: success() && !env.SKIP_JOB
       - name: install clang
         run: src/ci/scripts/install-clang.sh
         if: success() && !env.SKIP_JOB

src/ci/github-actions/ci.yml

@@ -153,10 +153,6 @@ x--expand-yaml-anchors--remove:
         run: src/ci/scripts/install-sccache.sh
         <<: *step
 
-      - name: select Xcode
-        run: src/ci/scripts/select-xcode.sh
-        <<: *step
-
       - name: install clang
         run: src/ci/scripts/install-clang.sh
         <<: *step
@@ -498,7 +494,6 @@ jobs:
                 --set rust.jemalloc
                 --set llvm.ninja=false
               RUSTC_RETRY_LINKER_ON_SEGFAULT: 1
-              SELECT_XCODE: /Applications/Xcode_12.2.app
               USE_XCODE_CLANG: 1
               MACOSX_DEPLOYMENT_TARGET: 11.0
               MACOSX_STD_DEPLOYMENT_TARGET: 11.0