Remove MACOSX_DEPLOYMENT_TARGET

Author: oscarhiggott

.github/workflows/ci.yml

@@ -31,7 +31,6 @@ jobs:
   build_wheels:
     runs-on: ${{ matrix.os_dist.os }}
     env:
-      MACOSX_DEPLOYMENT_TARGET: "10.15"
       CIBW_BUILD: "${{ matrix.os_dist.dist }}"
       CIBW_ARCHS_MACOS: "x86_64 universal2 arm64"
       CIBW_BEFORE_BUILD: pip install --upgrade ninja