diff --git a/homeassistant/components/thread/__init__.py b/homeassistant/components/thread/__init__.py
index 22a621f84fae..ffbe32e389a1 100644
--- a/homeassistant/components/thread/__init__.py
+++ b/homeassistant/components/thread/__init__.py
@@ -34,9 +34,6 @@ async def async_setup(hass: HomeAssistant, config: ConfigType) -> bool:
             )
         )
     async_setup_ws_api(hass)
-    # Uses legacy hass.data[DOMAIN] pattern
-    # pylint: disable-next=home-assistant-use-runtime-data
-    hass.data[DOMAIN] = {}
     return True