diff --git a/homeassistant/components/growatt_server/config_flow.py b/homeassistant/components/growatt_server/config_flow.py
index 45f56a327b2..d6b2c7db9fe 100644
--- a/homeassistant/components/growatt_server/config_flow.py
+++ b/homeassistant/components/growatt_server/config_flow.py
@@ -76,7 +76,3 @@ class GrowattServerConfigFlow(config_entries.ConfigFlow, domain=DOMAIN):
         self._abort_if_unique_id_configured()
         self.data.update(user_input)
         return self.async_create_entry(title=self.data[CONF_NAME], data=self.data)
-
-    async def async_step_import(self, import_data):
-        """Migrate old yaml config to config flow."""
-        return await self.async_step_user(import_data)
diff --git a/homeassistant/components/growatt_server/sensor.py b/homeassistant/components/growatt_server/sensor.py
index fe6bdeb70e8..530842fab7b 100644
--- a/homeassistant/components/growatt_server/sensor.py
+++ b/homeassistant/components/growatt_server/sensor.py
@@ -5,10 +5,8 @@ import logging
 import re
 
 import growattServer
-import voluptuous as vol
 
-from homeassistant.components.sensor import PLATFORM_SCHEMA, SensorEntity
-from homeassistant.config_entries import SOURCE_IMPORT
+from homeassistant.components.sensor import SensorEntity
 from homeassistant.const import (
     CONF_NAME,
     CONF_PASSWORD,
@@ -31,10 +29,9 @@ from homeassistant.const import (
     POWER_WATT,
     TEMP_CELSIUS,
 )
-import homeassistant.helpers.config_validation as cv
 from homeassistant.util import Throttle, dt
 
-from .const import CONF_PLANT_ID, DEFAULT_NAME, DEFAULT_PLANT_ID, DEFAULT_URL, DOMAIN
+from .const import CONF_PLANT_ID, DEFAULT_PLANT_ID, DEFAULT_URL
 
 _LOGGER = logging.getLogger(__name__)
 
@@ -549,30 +546,6 @@ SENSOR_TYPES = {
     **MIX_SENSOR_TYPES,
 }
 
-PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend(
-    {
-        vol.Optional(CONF_NAME, default=DEFAULT_NAME): cv.string,
-        vol.Optional(CONF_PLANT_ID, default=DEFAULT_PLANT_ID): cv.string,
-        vol.Required(CONF_USERNAME): cv.string,
-        vol.Required(CONF_PASSWORD): cv.string,
-        vol.Required(CONF_URL, default=DEFAULT_URL): cv.string,
-    }
-)
-
-
-async def async_setup_platform(hass, config, async_add_entities, discovery_info=None):
-    """Set up growatt server from yaml."""
-    if not hass.config_entries.async_entries(DOMAIN):
-        _LOGGER.warning(
-            "Loading Growatt via platform setup is deprecated."
-            "Please remove it from your configuration"
-        )
-        hass.async_create_task(
-            hass.config_entries.flow.async_init(
-                DOMAIN, context={"source": SOURCE_IMPORT}, data=config
-            )
-        )
-
 
 def get_device_list(api, config):
     """Retrieve the device list for the selected plant."""
diff --git a/tests/components/growatt_server/test_config_flow.py b/tests/components/growatt_server/test_config_flow.py
index 662448c8118..096052fd6cf 100644
--- a/tests/components/growatt_server/test_config_flow.py
+++ b/tests/components/growatt_server/test_config_flow.py
@@ -149,30 +149,6 @@ async def test_one_plant_on_account(hass):
     assert result["data"][CONF_PLANT_ID] == "123456"
 
 
-async def test_import_one_plant(hass):
-    """Test import step with a single plant."""
-    import_data = FIXTURE_USER_INPUT.copy()
-
-    with patch(
-        "growattServer.GrowattApi.login", return_value=GROWATT_LOGIN_RESPONSE
-    ), patch(
-        "growattServer.GrowattApi.plant_list",
-        return_value=GROWATT_PLANT_LIST_RESPONSE,
-    ), patch(
-        "homeassistant.components.growatt_server.async_setup_entry", return_value=True
-    ):
-        result = await hass.config_entries.flow.async_init(
-            DOMAIN,
-            context={"source": config_entries.SOURCE_IMPORT},
-            data=import_data,
-        )
-
-    assert result["type"] == data_entry_flow.RESULT_TYPE_CREATE_ENTRY
-    assert result["data"][CONF_USERNAME] == FIXTURE_USER_INPUT[CONF_USERNAME]
-    assert result["data"][CONF_PASSWORD] == FIXTURE_USER_INPUT[CONF_PASSWORD]
-    assert result["data"][CONF_PLANT_ID] == "123456"
-
-
 async def test_existing_plant_configured(hass):
     """Test entering an existing plant_id."""
     entry = MockConfigEntry(domain=DOMAIN, unique_id="123456")