Remove gotcha.pw, site no longer working.

- signed-off-by: Axel Garcia <axegarci@ucsc.edu>

README.md

@@ -303,7 +303,6 @@ performance of any of your sites from across the globe.<br>
 
 <p>
 &nbsp;&nbsp;:small_orange_diamond: <a href="https://www.random.org/passwords/"><b>Random.org</b></a> - generate random passwords.<br>
-&nbsp;&nbsp;:small_orange_diamond: <a href="https://gotcha.pw/"><b>Gotcha?</b></a> - list of 1.4 billion accounts circulates around the Internet.<br>
 &nbsp;&nbsp;:small_orange_diamond: <a href="https://haveibeenpwned.com/"><b>have i been pwned?</b></a> - check if you have an account that has been compromised in a data breach.<br>
 </p>