modify ordering-family.rst to previous version for now

Author: bipashabg

doc/ordering/ordering-family.rst

@@ -22,7 +22,6 @@ Ordering - Family of functions
 .. official-start
 
 * :doc:`pgr_cuthillMckeeOrdering` - Return reverse Cuthill-McKee ordering of an undirected graph.
-* :doc:`pgr_sloanOrdering` - Return sloanordering of an undirected graph.
 * :doc:`pgr_topologicalSort` - Linear ordering of the vertices for directed
   acyclic graph.
 
@@ -32,7 +31,6 @@ Ordering - Family of functions
     :hidden:
 
     pgr_cuthillMckeeOrdering
-    pgr_sloanOrdering
     pgr_topologicalSort
 
 See Also