chore(actions): allow --arch in github action to work

We do this by removing the arch-flag overrides in pyproject.toml which
seems to be respected ahead of the --arch flag on the command-line.

When running this from a developer machine we should end up building
whatever that developer machine can build, one/none/all archs.

pyproject.toml

@@ -41,9 +41,11 @@ before-build = """\
 LIBOGDF_INSTALL_PATH="$(pwd)/libOGDF"
 
 [tool.cibuildwheel.macos]
-# For now build `x86_64` and `arm64` instead of `universal2` because we currently do
-# not build /usr/local/lib/libOGDF.dylib under `arm64` for some reason.
-archs = ["x86_64", "arm64"]
+# Specify the --arch flag in the github-action, achieving the following:
+#  - we fall-back to default arch local-dev machines.
+#  - we build the best arch on the best platform for that arch in github
+#    actions.
+# archs = ["x86_64", "arm64"]
 before-all = ["brew install libomp llvm"]
 # NOTE: we delete build/ here as we're build multiple wheels and we support
 #       different SIMD commands on different platforms.