Remove model parameter from docstring.

It's not part of the method signature.

Author: tomicapretto

bambi/backend/pymc.py

@@ -448,7 +448,6 @@ def _run_laplace(self, draws, omit_offsets, include_mean):
 
         Parameters
         ----------
-        model: PyMC model
         draws: int
             The number of samples to draw from the posterior distribution.
         omit_offsets: bool