Fixing rebase conflicts.

Author: vinisalazar

_episodes/13-matplotlib.md

@@ -68,7 +68,6 @@ df['years_liv'].hist(bins=20)
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 {: .language-python}
 
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 We can also specify the column as a parameter and a groupby column with the `by` keyword. there are a lot of keywords available to make it look better, we can see some of the most likely ones (as decided by Pandas developers) by using <kbd>shift</kbd> + <kbd>tab<kbd>. Lets try `layout`, `figsize`, and `sharex`.
 
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