diff --git a/homeassistant/components/honeywell/climate.py b/homeassistant/components/honeywell/climate.py
index 6c686e92b8e..57ce0125c93 100644
--- a/homeassistant/components/honeywell/climate.py
+++ b/homeassistant/components/honeywell/climate.py
@@ -5,9 +5,8 @@ import datetime
 from typing import Any
 
 import somecomfort
-import voluptuous as vol
 
-from homeassistant.components.climate import PLATFORM_SCHEMA, ClimateEntity
+from homeassistant.components.climate import ClimateEntity
 from homeassistant.components.climate.const import (
     ATTR_TARGET_TEMP_HIGH,
     ATTR_TARGET_TEMP_LOW,
@@ -31,25 +30,12 @@ from homeassistant.components.climate.const import (
     SUPPORT_TARGET_TEMPERATURE,
     SUPPORT_TARGET_TEMPERATURE_RANGE,
 )
-from homeassistant.config_entries import SOURCE_IMPORT
-from homeassistant.const import (
-    ATTR_TEMPERATURE,
-    CONF_PASSWORD,
-    CONF_REGION,
-    CONF_USERNAME,
-    TEMP_CELSIUS,
-    TEMP_FAHRENHEIT,
-)
-import homeassistant.helpers.config_validation as cv
+from homeassistant.const import ATTR_TEMPERATURE, TEMP_CELSIUS, TEMP_FAHRENHEIT
 
 from .const import (
     _LOGGER,
     CONF_COOL_AWAY_TEMPERATURE,
-    CONF_DEV_ID,
     CONF_HEAT_AWAY_TEMPERATURE,
-    CONF_LOC_ID,
-    DEFAULT_COOL_AWAY_TEMPERATURE,
-    DEFAULT_HEAT_AWAY_TEMPERATURE,
     DOMAIN,
 )
 
@@ -59,25 +45,6 @@ ATTR_PERMANENT_HOLD = "permanent_hold"
 
 PRESET_HOLD = "Hold"
 
-PLATFORM_SCHEMA = vol.All(
-    cv.deprecated(CONF_REGION),
-    PLATFORM_SCHEMA.extend(
-        {
-            vol.Required(CONF_USERNAME): cv.string,
-            vol.Required(CONF_PASSWORD): cv.string,
-            vol.Optional(
-                CONF_COOL_AWAY_TEMPERATURE, default=DEFAULT_COOL_AWAY_TEMPERATURE
-            ): vol.Coerce(int),
-            vol.Optional(
-                CONF_HEAT_AWAY_TEMPERATURE, default=DEFAULT_HEAT_AWAY_TEMPERATURE
-            ): vol.Coerce(int),
-            vol.Optional(CONF_REGION): cv.string,
-            vol.Optional(CONF_DEV_ID): cv.string,
-            vol.Optional(CONF_LOC_ID): cv.string,
-        }
-    ),
-)
-
 HVAC_MODE_TO_HW_MODE = {
     "SwitchOffAllowed": {HVAC_MODE_OFF: "off"},
     "SwitchAutoAllowed": {HVAC_MODE_HEAT_COOL: "auto"},
@@ -127,26 +94,6 @@ async def async_setup_entry(hass, config, async_add_entities, discovery_info=Non
     )
 
 
-async def async_setup_platform(hass, config, add_entities, discovery_info=None):
-    """Set up the Honeywell climate platform.
-
-    Honeywell uses config flow for configuration now. If an entry exists in
-    configuration.yaml, the import flow will attempt to import it and create
-    a config entry.
-    """
-
-    if config["platform"] == "honeywell":
-        _LOGGER.warning(
-            "Loading honeywell via platform config is deprecated; The configuration"
-            " has been migrated to a config entry and can be safely removed"
-        )
-        # No config entry exists and configuration.yaml config exists, trigger the import flow.
-        if not hass.config_entries.async_entries(DOMAIN):
-            await hass.config_entries.flow.async_init(
-                DOMAIN, context={"source": SOURCE_IMPORT}, data=config
-            )
-
-
 class HoneywellUSThermostat(ClimateEntity):
     """Representation of a Honeywell US Thermostat."""
 
diff --git a/homeassistant/components/honeywell/config_flow.py b/homeassistant/components/honeywell/config_flow.py
index ecf42f4533f..505a49f062b 100644
--- a/homeassistant/components/honeywell/config_flow.py
+++ b/homeassistant/components/honeywell/config_flow.py
@@ -5,7 +5,7 @@ from homeassistant import config_entries
 from homeassistant.const import CONF_PASSWORD, CONF_USERNAME
 
 from . import get_somecomfort_client
-from .const import CONF_COOL_AWAY_TEMPERATURE, CONF_HEAT_AWAY_TEMPERATURE, DOMAIN
+from .const import DOMAIN
 
 
 class HoneywellConfigFlow(config_entries.ConfigFlow, domain=DOMAIN):
@@ -42,14 +42,3 @@ class HoneywellConfigFlow(config_entries.ConfigFlow, domain=DOMAIN):
         )
 
         return client is not None
-
-    async def async_step_import(self, import_data):
-        """Import entry from configuration.yaml."""
-        return await self.async_step_user(
-            {
-                CONF_USERNAME: import_data[CONF_USERNAME],
-                CONF_PASSWORD: import_data[CONF_PASSWORD],
-                CONF_COOL_AWAY_TEMPERATURE: import_data[CONF_COOL_AWAY_TEMPERATURE],
-                CONF_HEAT_AWAY_TEMPERATURE: import_data[CONF_HEAT_AWAY_TEMPERATURE],
-            }
-        )
diff --git a/homeassistant/components/honeywell/const.py b/homeassistant/components/honeywell/const.py
index 6102f30d3de..2dce56046a3 100644
--- a/homeassistant/components/honeywell/const.py
+++ b/homeassistant/components/honeywell/const.py
@@ -3,8 +3,6 @@ import logging
 
 DOMAIN = "honeywell"
 
-DEFAULT_COOL_AWAY_TEMPERATURE = 88
-DEFAULT_HEAT_AWAY_TEMPERATURE = 61
 CONF_COOL_AWAY_TEMPERATURE = "away_cool_temperature"
 CONF_HEAT_AWAY_TEMPERATURE = "away_heat_temperature"
 CONF_DEV_ID = "thermostat"
diff --git a/tests/components/honeywell/test_config_flow.py b/tests/components/honeywell/test_config_flow.py
index 65f47ddf35f..47897cf246d 100644
--- a/tests/components/honeywell/test_config_flow.py
+++ b/tests/components/honeywell/test_config_flow.py
@@ -5,7 +5,7 @@ import somecomfort
 
 from homeassistant import data_entry_flow
 from homeassistant.components.honeywell.const import DOMAIN
-from homeassistant.config_entries import SOURCE_IMPORT, SOURCE_USER
+from homeassistant.config_entries import SOURCE_USER
 from homeassistant.core import HomeAssistant
 
 FAKE_CONFIG = {
@@ -49,15 +49,3 @@ async def test_create_entry(hass: HomeAssistant) -> None:
         )
         assert result["type"] == data_entry_flow.RESULT_TYPE_CREATE_ENTRY
         assert result["data"] == FAKE_CONFIG
-
-
-async def test_async_step_import(hass: HomeAssistant) -> None:
-    """Test that the import step works."""
-    with patch(
-        "somecomfort.SomeComfort",
-    ):
-        result = await hass.config_entries.flow.async_init(
-            DOMAIN, context={"source": SOURCE_IMPORT}, data=FAKE_CONFIG
-        )
-        assert result["type"] == data_entry_flow.RESULT_TYPE_CREATE_ENTRY
-        assert result["data"] == FAKE_CONFIG