diff --git a/neutron_lbaas/extensions/loadbalancerv2.py b/neutron_lbaas/extensions/loadbalancerv2.py
index b6d6184ff..8f0c8ae3c 100644
--- a/neutron_lbaas/extensions/loadbalancerv2.py
+++ b/neutron_lbaas/extensions/loadbalancerv2.py
@@ -144,41 +144,6 @@ def _validate_connection_limit(data, min_value=lb_const.MIN_CONNECT_VALUE):
 
 validators.validators['type:connection_limit'] = _validate_connection_limit
 
-
-# TODO(iranzo) Remove when available in neutron-lib, see bug 1598879.
-
-def _validate_integer(data, valid_values=None):
-    """This function validates if the data is an integer.
-
-    It checks both number or string provided to validate it's an
-    integer and returns a message with the error if it's not
-
-    :param data: The string or number to validate as integer
-    :param valid_values: None (for future usage)
-    :return: Message if not an integer.
-    """
-
-    if valid_values and (data not in valid_values):
-        msg = (_("'%(data)s' is not within '%(valid_values)s'") %
-               {'data': data, 'valid_values': valid_values})
-        return msg
-
-    msg = _("'%s' is not an integer") % data
-    try:
-        fl_n = float(data)
-        int_n = int(data)
-    except (ValueError, TypeError, OverflowError):
-        LOG.debug(msg)
-        return msg
-    else:
-        # Fail test if non equal or boolean
-        if fl_n != int_n or isinstance(data, bool):
-            LOG.debug(msg)
-            return msg
-
-
-attr.validators['type:integer'] = _validate_integer
-
 RESOURCE_ATTRIBUTE_MAP = {
     'loadbalancers': {
         'id': {'allow_post': False, 'allow_put': False,