remove orphan hyperlinks

docs/developers/coredev/packaging.md

@@ -234,18 +234,10 @@ Generating a `conda`-based installer requires several components in place:
 [3]: https://github.com/napari/napari/blob/main/Makefile#L20
 [4]: https://github.com/pypa/gh-action-pypi-publish
 [6]: https://github.com/conda/constructor
-[7]: https://github.com/conda/constructor/blob/main/CONSTRUCT.md
+[7]: https://conda.github.io/constructor/construct-yaml/
 [8]: https://conda-forge.org/docs/maintainer/updating_pkgs.html#rerendering-feedstocks
-[9]: https://github.com/jaimergp/constructor/tree/menuinst-cep
-[10]: https://github.com/jaimergp/conda/tree/cep-menuinst
-[11]: https://github.com/conda/menuinst/tree/cep-devel
-[12]: https://github.com/jaimergp-forge/constructor-feedstock
-[13]: https://github.com/conda-forge/conda-standalone-feedstock
-[14]: https://github.com/jaimergp-forge/conda-feedstock
-[15]: https://github.com/jaimergp-forge/menuinst-feedstock
 [16]: https://github.com/conda-forge/napari-feedstock/pulls?q=is%3Apr+sort%3Aupdated-desc+is%3Aclosed
 [17]: https://anaconda.org/napari
-[18]: https://github.com/napari/packaging/issues/15
 [19]: https://nsis.sourceforge.io/Main_Page
 [20]: https://pypi.org/project/napari
 [21]: https://anaconda.org/conda-forge/napari