fixup! Use new GitHub native aarch64 macOS runners

Don't pass a target triple when building libbacktrace... let's see if it figures out the right thing to do just from -arch

Author: godlygeek

.github/workflows/build_wheels.yml

@@ -126,7 +126,6 @@ jobs:
         if: matrix.arch == 'arm64'
         run: |
           echo "MACOSX_DEPLOYMENT_TARGET=11.0" >> $GITHUB_ENV
-          echo "MEMRAY_LIBBACKTRACE_TARGET=aarch64-apple-darwin" >> $GITHUB_ENV
       - name: Build wheels
         uses: pypa/cibuildwheel@v2.16.5
         env: