Fix style issues: remove duplicate function, fix indentation, and rem…

…ove unused variable

src/pybamm/input/parameters/lithium_ion/Chen2020_composite.py

@@ -347,39 +347,6 @@ def nmc_LGM50_ocp_Chen2020(sto):
     return u_eq
 
 
-def nmc_LGM50_ocp_Chen2020(sto):
-    """
-    LG M50 NMC open-circuit potential as a function of stoichiometry, fit taken
-    from [1].
-
-    References
-    ----------
-    .. [1] Chang-Hui Chen, Ferran Brosa Planella, Kieran O’Regan, Dominika Gastol, W.
-    Dhammika Widanage, and Emma Kendrick. "Development of Experimental Techniques for
-    Parameterization of Multi-scale Lithium-ion Battery Models." Journal of the
-    Electrochemical Society 167 (2020): 080534.
-
-    Parameters
-    ----------
-    sto: :class:`pybamm.Symbol`
-        Electrode stoichiometry
-
-    Returns
-    -------
-    :class:`pybamm.Symbol`
-        Open-circuit potential
-    """
-
-    u_eq = (
-        -0.8090 * sto
-        + 4.4875
-        - 0.0428 * np.tanh(18.5138 * (sto - 0.5542))
-        - 17.7326 * np.tanh(15.7890 * (sto - 0.3117))
-        + 17.5842 * np.tanh(15.9308 * (sto - 0.3120))
-    )
-
-    return u_eq
-
 
 def nmc_LGM50_electrolyte_exchange_current_density_Chen2020(c_e, c_s_surf, c_s_max, T):
     """

src/pybamm/models/full_battery_models/base_battery_model.py

@@ -596,6 +596,7 @@ def __init__(self, extra_options):
                 options["stress-induced diffusion"] == "true"
                 #and options["particle mechanics"] == "none"
             ):
+                pass
                 # raise pybamm.OptionError(
                 #     "cannot have stress-induced diffusion without a particle "
                 #     "mechanics model"

src/pybamm/models/submodels/particle/base_particle.py

@@ -29,7 +29,6 @@ def __init__(self, param, domain, options, phase="primary"):
 
     def _get_effective_diffusivity(self, c, T, current):
         domain, Domain = self.domain_Domain
-        domain_param = self.domain_param
         phase_param = self.phase_param
         domain_options = getattr(self.options, domain)