diff --git a/homeassistant/components/tradfri/__init__.py b/homeassistant/components/tradfri/__init__.py
index 8508dab5b96..e2c90098314 100644
--- a/homeassistant/components/tradfri/__init__.py
+++ b/homeassistant/components/tradfri/__init__.py
@@ -17,7 +17,6 @@ from homeassistant.exceptions import ConfigEntryNotReady
 import homeassistant.helpers.config_validation as cv
 from homeassistant.helpers.event import async_track_time_interval
 from homeassistant.helpers.typing import ConfigType
-from homeassistant.util.json import load_json
 
 from .const import (
     ATTR_TRADFRI_GATEWAY,
@@ -29,7 +28,6 @@ from .const import (
     CONF_IDENTITY,
     CONF_IMPORT_GROUPS,
     CONF_KEY,
-    CONFIG_FILE,
     DEFAULT_ALLOW_TRADFRI_GROUPS,
     DEVICES,
     DOMAIN,
@@ -69,27 +67,10 @@ async def async_setup(hass: HomeAssistant, config: ConfigType):
         entry.data.get("host") for entry in hass.config_entries.async_entries(DOMAIN)
     ]
 
-    legacy_hosts = await hass.async_add_executor_job(
-        load_json, hass.config.path(CONFIG_FILE)
-    )
-
-    for host, info in legacy_hosts.items():  # type: ignore
-        if host in configured_hosts:
-            continue
-
-        info[CONF_HOST] = host
-        info[CONF_IMPORT_GROUPS] = conf[CONF_ALLOW_TRADFRI_GROUPS]
-
-        hass.async_create_task(
-            hass.config_entries.flow.async_init(
-                DOMAIN, context={"source": config_entries.SOURCE_IMPORT}, data=info
-            )
-        )
-
     host = conf.get(CONF_HOST)
     import_groups = conf[CONF_ALLOW_TRADFRI_GROUPS]
 
-    if host is None or host in configured_hosts or host in legacy_hosts:
+    if host is None or host in configured_hosts:
         return True
 
     hass.async_create_task(
diff --git a/homeassistant/components/tradfri/const.py b/homeassistant/components/tradfri/const.py
index f7c2bf6cbe5..1f382548263 100644
--- a/homeassistant/components/tradfri/const.py
+++ b/homeassistant/components/tradfri/const.py
@@ -15,7 +15,6 @@ CONF_IDENTITY = "identity"
 CONF_IMPORT_GROUPS = "import_groups"
 CONF_GATEWAY_ID = "gateway_id"
 CONF_KEY = "key"
-CONFIG_FILE = ".tradfri_psk.conf"
 DEFAULT_ALLOW_TRADFRI_GROUPS = False
 DOMAIN = "tradfri"
 KEY_API = "tradfri_api"
diff --git a/tests/components/tradfri/test_init.py b/tests/components/tradfri/test_init.py
index 8e11ab06f34..e8cc83a456c 100644
--- a/tests/components/tradfri/test_init.py
+++ b/tests/components/tradfri/test_init.py
@@ -1,81 +1,12 @@
 """Tests for Tradfri setup."""
 from unittest.mock import patch
 
-from homeassistant import config_entries
 from homeassistant.components import tradfri
 from homeassistant.helpers import device_registry as dr
-from homeassistant.setup import async_setup_component
 
 from tests.common import MockConfigEntry
 
 
-async def test_config_yaml_host_not_imported(hass):
-    """Test that we don't import a configured host."""
-    MockConfigEntry(domain="tradfri", data={"host": "mock-host"}).add_to_hass(hass)
-
-    with patch(
-        "homeassistant.components.tradfri.load_json", return_value={}
-    ), patch.object(hass.config_entries.flow, "async_init") as mock_init:
-        assert await async_setup_component(
-            hass, "tradfri", {"tradfri": {"host": "mock-host"}}
-        )
-        await hass.async_block_till_done()
-
-    assert len(mock_init.mock_calls) == 0
-
-
-async def test_config_yaml_host_imported(hass):
-    """Test that we import a configured host."""
-    with patch("homeassistant.components.tradfri.load_json", return_value={}):
-        assert await async_setup_component(
-            hass, "tradfri", {"tradfri": {"host": "mock-host"}}
-        )
-        await hass.async_block_till_done()
-
-    progress = hass.config_entries.flow.async_progress()
-    assert len(progress) == 1
-    assert progress[0]["handler"] == "tradfri"
-    assert progress[0]["context"] == {"source": config_entries.SOURCE_IMPORT}
-
-
-async def test_config_json_host_not_imported(hass):
-    """Test that we don't import a configured host."""
-    MockConfigEntry(domain="tradfri", data={"host": "mock-host"}).add_to_hass(hass)
-
-    with patch(
-        "homeassistant.components.tradfri.load_json",
-        return_value={"mock-host": {"key": "some-info"}},
-    ), patch.object(hass.config_entries.flow, "async_init") as mock_init:
-        assert await async_setup_component(hass, "tradfri", {"tradfri": {}})
-        await hass.async_block_till_done()
-
-    assert len(mock_init.mock_calls) == 0
-
-
-async def test_config_json_host_imported(
-    hass, mock_gateway_info, mock_entry_setup, gateway_id
-):
-    """Test that we import a configured host."""
-    mock_gateway_info.side_effect = lambda hass, host, identity, key: {
-        "host": host,
-        "identity": identity,
-        "key": key,
-        "gateway_id": gateway_id,
-    }
-
-    with patch(
-        "homeassistant.components.tradfri.load_json",
-        return_value={"mock-host": {"key": "some-info"}},
-    ):
-        assert await async_setup_component(hass, "tradfri", {"tradfri": {}})
-        await hass.async_block_till_done()
-
-    config_entry = mock_entry_setup.mock_calls[0][1][1]
-    assert config_entry.domain == "tradfri"
-    assert config_entry.source == config_entries.SOURCE_IMPORT
-    assert config_entry.title == "mock-host"
-
-
 async def test_entry_setup_unload(hass, api_factory, gateway_id):
     """Test config entry setup and unload."""
     entry = MockConfigEntry(