Remove outdated GuardRails badge

Author: siriak

README.md

@@ -6,7 +6,6 @@
 [![Build Status](https://app.travis-ci.com/TheAlgorithms/C-Sharp.svg?branch=master)](https://app.travis-ci.com/TheAlgorithms/C-Sharp)
 [![Codacy Badge](https://app.codacy.com/project/badge/Grade/58895a2795bd48a8b3b7eb6ebe22d576)](https://www.codacy.com/gh/TheAlgorithms/C-Sharp/dashboard?utm_source=github.com&utm_medium=referral&utm_content=TheAlgorithms/C-Sharp&utm_campaign=Badge_Grade)
 [![codecov](https://codecov.io/gh/TheAlgorithms/C-Sharp/branch/master/graph/badge.svg)](https://codecov.io/gh/TheAlgorithms/C-Sharp)
-[![GuardRails badge](https://badges.guardrails.io/TheAlgorithms/C-Sharp.svg?token=84805208ba243f0931a74c5148883f894cbe9fd97fe54d64d6d0a89852067548)](https://dashboard.guardrails.io/default/gh/TheAlgorithms/C-Sharp)
 [![Donate](https://liberapay.com/assets/widgets/donate.svg)](https://liberapay.com/TheAlgorithms/donate)
 
 ## All Algorithms implemented in C# - for education purposes