Update CONTRIBUTING.md

Author: dupuisa

CONTRIBUTING.md

@@ -1,6 +1,6 @@
 # Contributing to sonar-icode-cnes-plugin
 
-:+1::tada: First off, thanks for taking the time to contribute! :tada::+1:
+First off, thanks for taking the time to contribute!
 
 The following is a set of guidelines for contributing to sonar-icode-cnes-plugin, which are hosted in the [Lequal Organization](https://github.com/lequal) on GitHub. These are mostly guidelines, not rules. Use your best judgment, and feel free to propose changes to this document in a pull request.
 
@@ -15,9 +15,6 @@ The following is a set of guidelines for contributing to sonar-icode-cnes-plugin
 
 [Git Commit Messages](#git-commit-messages)
 
-[Additional Notes](#additional-notes)
-  * [Issue and Pull Request Labels](#issue-and-pull-request-labels)
-
 ## Code of Conduct
 
 This project and everyone participating in it is governed by the [Lequal Code of Conduct](CODE_OF_CONDUCT.md). By participating, you are expected to uphold this code. Please report unacceptable behavior to [[email protected]](mailto:[email protected]).