Library Seaborn has this built in with function .despine()
.
Just add:
import seaborn as sns
Now create your graph. And add at the end:
sns.despine()
If you look at some of the default parameter values of the function it removes the top and right spine and keeps the bottom and left spine:
sns.despine(top=True, right=True, left=False, bottom=False)
Check out further documentation here: https://seaborn.pydata.org/generated/seaborn.despine.html