removed outdated unreferenced files and refs

Author: larrybabb

docs/source/recipes/index.rst

@@ -19,7 +19,6 @@
 .. _polymeric chain: https://en.wikipedia.org/wiki/Polymer
 .. _protein: https://en.wikipedia.org/wiki/Protein
 .. _vrs-issues: https://github.com/ga4gh/vrs/issues/
-.. _VRSATILE: https://vrsatile.readthedocs.io/en/latest/index.html
 .. _cat-vrs: https://cat-vrs.readthedocs.io/en/latest/index.html
 
 .. |curie| replace:: `Compact URI (CURIE)`_