rephrase "breaking change" as "deprecation"

Author: Robbybp

pyomo/contrib/incidence_analysis/interface.py

@@ -891,7 +891,7 @@ def remove_nodes(self, variables=None, constraints=None):
 
         .. note::
 
-           **Breaking change in Pyomo vTBD**
+           **Deprecation in Pyomo vTBD**
 
            The pre-TBD implementation of ``remove_nodes`` allowed variables and
            constraints to remove to be specified in a single list. This made