I upgraded from 16.04 to 18.04 and I noticed that desktop icons' text have shadows, which I dislike a lot. How can I disable the shadows? I attached some photos (16.04 vs 18.04), sorry for their quality.
Thanks.

![pic1](https://i.stack.imgur.com/JLWRD.jpg)
![pic2](https://i.stack.imgur.com/wVK5c.jpg)