viz tutorial: Update custom plot to reflect new code

docs/tutorials/visualization_tutorial.ipynb

@@ -198,18 +198,16 @@
  "from matplotlib.figure import Figure\n",
  "\n",
  "\n",
- "def make_histogram(viz):\n",
+ "def make_histogram(model):\n",
  " # Note: you must initialize a figure using this method instead of\n",
  " # plt.figure(), for thread safety purpose\n",
  " fig = Figure()\n",
  " ax = fig.subplots()\n",
- " wealth_vals = [agent.wealth for agent in viz.model.schedule.agents]\n",
+ " wealth_vals = [agent.wealth for agent in model.schedule.agents]\n",
  " # Note: you have to use Matplotlib's OOP API instead of plt.hist\n",
  " # because plt.hist is not thread-safe.\n",
  " ax.hist(wealth_vals, bins=10)\n",
- " # You have to specify the dependencies as follows, so that the figure\n",
- " # auto-updates when viz.model or viz.df is changed.\n",
- " solara.FigureMatplotlib(fig, dependencies=[viz.model, viz.df])"
+ " solara.FigureMatplotlib(fig)"
  ]
  },
  {