tests: remove test for deta fan

There is nothing unique being tested here, and recent changes to the
config have broken the tests, so remove the tests rather than updating.

tests/devices/test_deta_fan.py

@@ -1,65 +0,0 @@
-from homeassistant.components.fan import FanEntityFeature
-
-from ..const import DETA_FAN_PAYLOAD
-from ..helpers import assert_device_properties_set
-from ..mixins.light import BasicLightTests
-from ..mixins.switch import BasicSwitchTests, SwitchableTests
-from .base_device_tests import TuyaDeviceTestCase
-
-SWITCH_DPS = "1"
-SPEED_DPS = "3"
-LIGHT_DPS = "9"
-MASTER_DPS = "101"
-TIMER_DPS = "102"
-LIGHT_TIMER_DPS = "103"
-
-
-class TestDetaFan(
-    BasicLightTests, BasicSwitchTests, SwitchableTests, TuyaDeviceTestCase
-):
-    __test__ = True
-
-    def setUp(self):
-        self.setUpForConfig("deta_fan.yaml", DETA_FAN_PAYLOAD)
-        self.subject = self.entities["fan"]
-        self.setUpSwitchable(SWITCH_DPS, self.subject)
-        self.setUpBasicLight(LIGHT_DPS, self.entities["light"])
-        self.setUpBasicSwitch(MASTER_DPS, self.entities["switch_master"])
-        self.mark_secondary(["switch_master"])
-
-    def test_supported_features(self):
-        self.assertEqual(
-            self.subject.supported_features,
-            FanEntityFeature.SET_SPEED
-            | FanEntityFeature.TURN_ON
-            | FanEntityFeature.TURN_OFF,
-        )
-
-    def test_speed(self):
-        self.dps[SPEED_DPS] = "1"
-        self.assertAlmostEqual(self.subject.percentage, 33, 0)
-
-    def test_speed_step(self):
-        self.assertAlmostEqual(self.subject.percentage_step, 33.3, 1)
-
-    async def test_set_speed(self):
-        async with assert_device_properties_set(self.subject._device, {SPEED_DPS: 2}):
-            await self.subject.async_set_percentage(66.7)
-
-    async def test_auto_stringify_speed(self):
-        self.dps[SPEED_DPS] = "1"
-        self.assertAlmostEqual(self.subject.percentage, 33, 0)
-        async with assert_device_properties_set(self.subject._device, {SPEED_DPS: "2"}):
-            await self.subject.async_set_percentage(66.7)
-
-    async def test_set_speed_snaps(self):
-        async with assert_device_properties_set(self.subject._device, {SPEED_DPS: 2}):
-            await self.subject.async_set_percentage(55)
-
-    def test_extra_state_attributes(self):
-        self.dps[TIMER_DPS] = "5"
-        self.assertEqual(self.subject.extra_state_attributes, {"timer": 5})
-
-    def test_basic_light_state_attributes(self):
-        self.dps[LIGHT_TIMER_DPS] = "6"
-        self.assertEqual(self.basicLight.extra_state_attributes, {"timer": 6})