CI: Don't run xcode-select.

Changing the developer directory shouldn't be necessary after the include
path fixups in 270c8ed746.

.github/workflows/macos.yml

@@ -29,10 +29,6 @@ jobs:
         run: gem install asciidoctor
       - name: Mkdir
         run: mkdir build
-      - name: Select xcode
-        run: |
-          sudo xcode-select --switch /Library/Developer/CommandLineTools
-          xcode-select --print-path
       - name: Cmake
         working-directory: build
         run: cmake -GNinja ..

.travis.yml

@@ -65,8 +65,6 @@ before_install:
   - if [ "$TRAVIS_OS_NAME" == "osx" ]; then ./tools/macos-setup-brew.sh; fi
   - if [ "$TRAVIS_OS_NAME" == "osx" ]; then brew install softhsm; fi
   - if [ "$TRAVIS_OS_NAME" == "osx" ]; then sed s/access_bpf/staff/ packaging/macosx/ChmodBPF/ChmodBPF | sudo bash; fi
-  # Required to fix an issue on macOS 10.14. Remove it as soon as Travis moves to 10.15.
-  - if [ "$TRAVIS_OS_NAME" == "osx" ]; then sudo xcode-select --switch /Library/Developer/CommandLineTools; fi
   # linux
   - if [ "$TRAVIS_OS_NAME" == "linux" ]; then sudo ./tools/debian-setup.sh --install-optional --install-test-deps -q; fi
   - if [ "$TRAVIS_OS_NAME" == "linux" ]; then sudo apt-get install -y python3-pip; fi