Update causalpy/experiments/diff_in_diff.py

Co-authored-by: Will Dean <57733339+wd60622@users.noreply.github.com>

Author: drbenvincent

causalpy/experiments/diff_in_diff.py

@@ -233,7 +233,6 @@ def bayesian_plot(self, round_to=None, **kwargs) -> tuple[plt.Figure, plt.Axes]:
         :param round_to:
             Number of decimals used to round results. Defaults to 2. Use "None" to return raw numbers.
         """
-        round_to = kwargs.get("round_to")
 
         def _plot_causal_impact_arrow(results, ax):
             """