Remove an outdated entry in the known issues documentation page

doc/src/known-issues.rst

@@ -18,11 +18,6 @@ Known issues, bugs and limitations
   configuration variables and thus command line arguments are
   effective then those shown by the generic help message.
 
-+ The return value of the `formal string representation operator`__ of
-  :class:`icat.query.Query` can not be used to recreate another query
-  object with the same value as required by Python standards, see
-  `Issue #94`_ for details.
-
 + The entries in the no_proxy configuration variable are matched
   against the host part of the URL by simple string comparison.  The
   host is excluded from proxy use if its name ends with any item in
@@ -34,6 +29,4 @@ Known issues, bugs and limitations
   the implementation of the underlying Python library.
 
 
-.. __: https://docs.python.org/3/reference/datamodel.html#object.__repr__
 .. _Issue #72: https://github.com/icatproject/python-icat/issues/72
-.. _Issue #94: https://github.com/icatproject/python-icat/issues/94