function removeInputValidator(inputId) {
  if (typeof inputId === 'string') {
      inputId = $(document.getElementById(inputId));
  }
  inputId.off('keyup').removeClass('validate-negative').removeClass('validate-positive');
}
Remove all input validators attached to an form element (keyup handler)
 as well as visual decorations applied

 @param {string|object} inputId id of input element or jquery object to remove handler and decoration from