removed v4 flag

emmanuelle · emmanuelle · commit 8d49d2db858f · 2019-06-08T22:56:14.000+02:00
diff --git a/notebooks/histograms.md b/notebooks/histograms.md
@@ -26,10 +26,6 @@ jupyter:
     title: Python Histograms | plotly
 ---
 
-```python
-from _plotly_future_ import v4
-```
-
 ## Histogram with plotly express
 
 A [histogram](https://en.wikipedia.org/wiki/Histogram) is representation of the distribution of numerical data, where the data are binned and the count for each bin is represented.
