doc: fix duplicate object description warning

modules/mol/alg/doc/molalg.rst

@@ -899,6 +899,7 @@ used to skip frames in the analysis.
   :returns: A newly created coord group containing the superposed frames.
 
 .. function:: SuperposeFrames(frames, sel, ref_view, from=0, to=-1)
+  :noindex:
 
   Same as SuperposeFrames above, but the superposition is done on a reference
   view and not on another frame of the trajectory.

modules/mol/mm/doc/forcefield.rst

@@ -568,6 +568,7 @@ The Forcefield Class
 
 
   .. method:: GetLJ(type1, type2,[,pair=False])
+    :noindex:
 
     :param type1:        Type of interacting particle 1
     :param type2:        Type of interacting particle 2