message: chore: Remove Obsolete WARNING_MSG from config
diff: @@ -504,11 +504,6 @@ MAX_TABLE_NAMES = 3000
  SQLLAB_SAVE_WARNING_MESSAGE = None
  SQLLAB_SCHEDULE_WARNING_MESSAGE = None
  -# If defined, shows this text in an alert-warning box in the navbar
  -# one example use case may be "STAGING" to make it clear that this is
  -# not the production version of the site.
  -WARNING_MSG = None
  -
  # Default celery config is to use SQLA as a broker, in a production setting
  # you'll want to use a proper broker as specified here:
  # http://docs.celeryproject.org/en/latest/getting-started/brokers/index.html
  