Removed the unnecessay text (#272)

HengchengZhang · web-flow · commit 46ef0b1c14e8 · 2023-04-11T20:28:03.000+10:00
Co-authored-by: HengCheng &lt;79777246+2789372130@users.noreply.github.com&gt;
diff --git a/lectures/python_by_example.md b/lectures/python_by_example.md
@@ -56,13 +56,6 @@ vertical axis.)
 We'll do this in several different ways, each time learning something more
 about Python.
 
-We run the following command first, which helps ensure that plots appear in the
-notebook if you run it on your own machine.
-
-```{code-cell} ipython
-%matplotlib inline
-```
-
 ## Version 1
 
 (ourfirstprog)=
