ci: don't build Python extension for ARM.

.github/workflows/release.yaml

@@ -109,7 +109,6 @@ jobs:
         include:
         - build: linux
           os: ubuntu-latest
-          arch: 'aarch64 x86_64'
 
         - build: macos
           os: macos-latest
@@ -154,14 +153,6 @@ jobs:
         pip install maturin==1.7.4
         maturin sdist --manifest-path py/Cargo.toml -o wheelhouse
 
-    # QEMU is required when building for aarch64.
-    # https://cibuildwheel.pypa.io/en/stable/faq/#emulation
-    - name: Set up QEMU
-      if: matrix.build == 'linux'
-      uses: docker/setup-qemu-action@v3
-      with:
-        platforms: all
-
     - name: Build ${{ matrix.platform || matrix.os }} binaries
       run: cibuildwheel --output-dir wheelhouse py
       env: