Remove redundant 3-SHAKE mitigation.

net/ssl/openssl_ssl_util.cc

Index: net/ssl/openssl_ssl_util.cc
diff --git a/net/ssl/openssl_ssl_util.cc b/net/ssl/openssl_ssl_util.cc
index c703a7166d500b0410d8a6d56497ce7ac7ded570..91c7908a5021fa2347d8139d4be96a96293c6985 100644
--- a/net/ssl/openssl_ssl_util.cc
+++ b/net/ssl/openssl_ssl_util.cc
@@ -98,13 +98,6 @@ int MapOpenSSLErrorSSL(uint32_t error_code) {
       return ERR_SSL_WEAK_SERVER_EPHEMERAL_DH_KEY;
     case SSL_R_SERVER_CERT_CHANGED:
       return ERR_SSL_SERVER_CERT_CHANGED;
-    case SSL_R_CERTIFICATE_VERIFY_FAILED:
-      // The only way that the certificate verify callback can fail is if
-      // the leaf certificate changed during a renegotiation.
-      //
-      // TODO(davidben): This check has since moved within BoringSSL. Remove the
-      // Chromium-side machinery for it.
-      return ERR_SSL_SERVER_CERT_CHANGED;
     // SSL_R_SSLV3_ALERT_HANDSHAKE_FAILURE may be returned from the server after
     // receiving ClientHello if there's no common supported cipher. Map that
     // specific case to ERR_SSL_VERSION_OR_CIPHER_MISMATCH to match the NSS