Remove trailing reference to user.full_name

tools/device_management.py

@@ -100,7 +100,7 @@ def wrap_init(func):
                 " Generting a new developer certificate."
             )
             dev_cert_info = CertificatesAPI().add_developer_certificate(
-                "mbed-cli-auto {}".format(user.full_name),
+                "mbed-cli-auto {}".format(api_key.name),
                 description="cetificate auto-generated by Mbed CLI"
             )
         LOG.info("Writing developer certificate %s into c file "