remove say thanks link

Author: AtsushiSakai

README.md

@@ -8,7 +8,6 @@
 [![Language grade: Python](https://img.shields.io/lgtm/grade/python/g/AtsushiSakai/PythonRobotics.svg?logo=lgtm&logoWidth=18)](https://lgtm.com/projects/g/AtsushiSakai/PythonRobotics/context:python)
 [![CodeFactor](https://www.codefactor.io/repository/github/atsushisakai/pythonrobotics/badge/master)](https://www.codefactor.io/repository/github/atsushisakai/pythonrobotics/overview/master)
 [![tokei](https://tokei.rs/b1/github/AtsushiSakai/PythonRobotics)](https://github.com/AtsushiSakai/PythonRobotics)
-[![Say Thanks!](https://img.shields.io/badge/Say%20Thanks-!-1EAEDB.svg)](https://saythanks.io/to/AtsushiSakai)
 
 Python codes for robotics algorithm.
 

users_comments.md

@@ -40,8 +40,6 @@ This is a list of related projects.
 
 # Individual users comments
 
-These are comments from user's using [![Say Thanks!](https://img.shields.io/badge/Say%20Thanks-!-1EAEDB.svg)](https://saythanks.io/to/AtsushiSakai)
-
 ---
 
 Dear AtsushiSakai, <br>thank you for building this cool repo for robotics. <br>I am still learning robotics and this will give me a good starting point. <br>I hope this note gets to you. <br> <br>