remove the fake documentation page (#1833)

Author: williambdean

pymc_marketing/mmm/components/saturation.py

@@ -465,8 +465,6 @@ def function(self, x, alpha, beta):
 class NoSaturation(SaturationTransformation):
     """Wrapper around linear saturation function.
 
-    For more information, see :func:`pymc_marketing.mmm.transformers.linear_saturation`.
-
     .. plot::
         :context: close-figs