Remove pyplot docs reference. Re #22101

docs/source/api/python/index.rst

@@ -11,14 +11,6 @@ If you are new to Python in Mantid then we advise first looking at our `Mantid t
 For tutorials on how to use python in MantidPlot please see `MantidPlot: Python Scripting <https://www.mantidproject.org/MantidPlot:_Python_Scripting>`_.
 
 
-Matplotlib-like plotting interface
-----------------------------------
-
-.. toctree::
-   :maxdepth: 1
-
-   mantidplot.pyplot <mantidplot/pyplot/index>
-
 Reference
 ---------
 .. toctree::

docs/source/api/python/mantidplot/plot.rst

-======
- plot
-======
-
-.. module:`mantidplot`
-
-.. autofunction:: mantidplot.plot
-