Remove rtistry section

Author: lcolladotor

posts/03-introduction-to-gitgithub/index.qmd

@@ -191,17 +191,6 @@ Here are some post-lecture questions to help you think about the material discus
 -   [git and GitHub in the `dsbook`](https://rafalab.github.io/dsbook/git.html) by Rafael Irizarry
 :::
 
-## rtistry
-
-```{r}
-#| label: flametree
-#| echo: false
-#| fig-cap-location: "top"
-knitr::include_graphics("https://github.com/djnavarro/art/raw/master/static/gallery/flametree/extra/001_flametree_20_13.jpg")
-```
-
-\['Flametree' from Danielle Navarro <https://art.djnavarro.net>\]
-
 # R session information
 
 ```{r}