test the problem

This commit is to test whether the problem is due to this code.

Author: longye-tian

lectures/inequality.md

@@ -1091,12 +1091,6 @@ data = df_income_wealth[df_income_wealth.year == 2016]
 data.head(n=2)
 ```
 
-We can first compute the Gini coefficient using the function defined in the lecture above.
-
-```{code-cell} ipython3
-gini_coefficient(data.n_wealth.values)
-```
-
 Now we can write a vectorized version using `numpy`
 
 ```{code-cell} ipython3