- README tweak

Author: Alan Christie

README.md

@@ -15,7 +15,6 @@ You will need: -
 -   Conda
 -   Groovy (v2.4)
 -   Python
--   An operating system that supports symbolic links
 
 >   It is vital that you install and setup a Java installation (especially by
     also setting `JAVA_HOME` correctly) _before_ you install groovy. Observed