remove security warning as it had been addressed

Signed-off-by: Jon Carl <jon.carl@auth0.com>

Author: grounded042

01-Authorization-RS256/README.md

@@ -1,7 +1,5 @@
 # Golang Authorization for RS256-Signed Tokens
 
-> :warning:  **Important security note:** This solution uses a 3rd party library with an unresolved [security issue](https://cve.mitre.org/cgi-bin/cvename.cgi?name=2020-26160). Please review the details of the vulnerability, including any of the documented mitigations, before implementing the solution.
-
 This sample demonstrates how to protect endpoints in a Go API by verifying an incoming JWT access token signed by Auth0. The token must be signed with the RS256 algorithm and must be verified against your Auth0 JSON Web Key Set.
 
 ## Getting Started