Removal of Taguchi optimisation. Move towards high-level config module, rather than settings in Grid class.

README.rst

@@ -183,7 +183,6 @@ Argument name          Type      Description
 ``-benchmark``         flag      switch on benchmarking mode. This can be used to benchmark the threading (parallel) performance of gprMax on different hardware. For further details see the `benchmarking section of the User Guide <http://docs.gprmax.com/en/latest/benchmarking.html>`_
 ``--geometry-only``    flag      build a model and produce any geometry views but do not run the simulation, e.g. to check the geometry of a model is correct: ``(gprMax)$ python -m gprMax user_models/heterogeneous_soil.in --geometry-only``
 ``--geometry-fixed``   flag      run a series of models where the geometry does not change between models, e.g. a B-scan where *only* the position of simple sources and receivers, moved using ``#src_steps`` and ``#rx_steps``, changes between models.
-``--opt-taguchi``      flag      run a series of models using an optimisation process based on Taguchi's method. For further details see the `user libraries section of the User Guide <http://docs.gprmax.com/en/latest/user_libs_opt_taguchi.html>`_
 ``--write-processed``  flag      write another input file after any Python code and include commands in the original input file have been processed. Useful for checking that any Python code is being correctly processed into gprMax commands.
 ``-h`` or ``--help``   flag      used to get help on command line options.
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