diff --git a/homeassistant/components/aussie_broadband/__init__.py b/homeassistant/components/aussie_broadband/__init__.py
index 1bdb0579976..6fc4a4dd4d1 100644
--- a/homeassistant/components/aussie_broadband/__init__.py
+++ b/homeassistant/components/aussie_broadband/__init__.py
@@ -3,11 +3,10 @@ from __future__ import annotations
 
 from datetime import timedelta
 import logging
-from typing import Any
 
 from aiohttp import ClientError
 from aussiebb.asyncio import AussieBB
-from aussiebb.const import FETCH_TYPES, NBN_TYPES, PHONE_TYPES
+from aussiebb.const import FETCH_TYPES
 from aussiebb.exceptions import AuthenticationException, UnrecognisedServiceType
 
 from homeassistant.config_entries import ConfigEntry
@@ -23,19 +22,6 @@ _LOGGER = logging.getLogger(__name__)
 PLATFORMS = [Platform.SENSOR]
 
 
-# Backport for the pyaussiebb=0.0.15 validate_service_type method
-def validate_service_type(service: dict[str, Any]) -> None:
-    """Check the service types against known types."""
-
-    if "type" not in service:
-        raise ValueError("Field 'type' not found in service data")
-    if service["type"] not in NBN_TYPES + PHONE_TYPES + ["Hardware"]:
-        raise UnrecognisedServiceType(
-            f"Service type {service['type']=} {service['name']=} - not recognised - ",
-            "please report this at https://github.com/yaleman/aussiebb/issues/new",
-        )
-
-
 async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
     """Set up Aussie Broadband from a config entry."""
     # Login to the Aussie Broadband API and retrieve the current service list
@@ -44,9 +30,7 @@ async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
         entry.data[CONF_PASSWORD],
         async_get_clientsession(hass),
     )
-    # Overwrite the pyaussiebb=0.0.15 validate_service_type method with backport
-    # Required until pydantic 2.x is supported
-    client.validate_service_type = validate_service_type
+
     try:
         await client.login()
         services = await client.get_services(drop_types=FETCH_TYPES)
diff --git a/tests/components/aussie_broadband/test_init.py b/tests/components/aussie_broadband/test_init.py
index dc32212ee87..3eb1972011c 100644
--- a/tests/components/aussie_broadband/test_init.py
+++ b/tests/components/aussie_broadband/test_init.py
@@ -3,11 +3,8 @@ from unittest.mock import patch
 
 from aiohttp import ClientConnectionError
 from aussiebb.exceptions import AuthenticationException, UnrecognisedServiceType
-import pydantic
-import pytest
 
 from homeassistant import data_entry_flow
-from homeassistant.components.aussie_broadband import validate_service_type
 from homeassistant.config_entries import ConfigEntryState
 from homeassistant.core import HomeAssistant
 
@@ -22,19 +19,6 @@ async def test_unload(hass: HomeAssistant) -> None:
     assert entry.state is ConfigEntryState.NOT_LOADED
 
 
-async def test_validate_service_type() -> None:
-    """Testing the validation function."""
-    test_service = {"type": "Hardware", "name": "test service"}
-    validate_service_type(test_service)
-
-    with pytest.raises(ValueError):
-        test_service = {"name": "test service"}
-        validate_service_type(test_service)
-    with pytest.raises(UnrecognisedServiceType):
-        test_service = {"type": "FunkyBob", "name": "test service"}
-        validate_service_type(test_service)
-
-
 async def test_auth_failure(hass: HomeAssistant) -> None:
     """Test init with an authentication failure."""
     with patch(
@@ -55,9 +39,3 @@ async def test_service_failure(hass: HomeAssistant) -> None:
     """Test init with a invalid service."""
     entry = await setup_platform(hass, usage_effect=UnrecognisedServiceType())
     assert entry.state is ConfigEntryState.SETUP_RETRY
-
-
-async def test_not_pydantic2() -> None:
-    """Test that Home Assistant still does not support Pydantic 2."""
-    """For PR#99077 and validate_service_type backport"""
-    assert pydantic.__version__ < "2"