Remove not working DT settings

Remove DT settings which do not seem to work on neither on DT/MS nor D-NS models.

goodwe/dt.py

@@ -105,11 +105,8 @@ class DT(Inverter):
 
     # Modbus registers of inverter settings, offsets are modbus register addresses
     __all_settings: Tuple[Sensor, ...] = (
-        Timestamp("time", 40313, "Inverter time"),
 
         Integer("shadow_scan", 40326, "Shadow Scan", "", Kind.PV),
-        Integer("grid_export", 40327, "Grid Export Enabled", "", Kind.GRID),
-        Integer("grid_export_limit", 40336, "Grid Export Limit", "W", Kind.GRID),
     )
 
     def __init__(self, host: str, comm_addr: int = 0, timeout: int = 1, retries: int = 3):

tests/test_dt.py

@@ -123,26 +123,12 @@ def test_GW6000_DT_runtime_data(self):
         self.assertSensor('xx144', 100, '', data)
 
     def test_GW6000_DT_read_setting(self):
-        self.loop.run_until_complete(self.read_setting('grid_export_limit'))
-        self.assertEqual('7f039d900001a195', self.request.hex())
-
-        self.loop.run_until_complete(self.read_setting('time'))
-        self.assertEqual('7f039d790003f1a0', self.request.hex())
+        self.loop.run_until_complete(self.read_setting('shadow_scan'))
+        self.assertEqual('7f039d8600014051', self.request.hex())
 
     def test_GW6000_DT_write_setting(self):
-        self.loop.run_until_complete(self.write_setting('grid_export_limit', 100))
-        self.assertEqual('7f069d900064adbe', self.request.hex())
-
-        self.loop.run_until_complete(self.write_setting('time', datetime(2022, 1, 4, 18, 30, 25)))
-        self.assertEqual('7f109d79000306160104121e190dfd', self.request.hex())
-
-    def test_get_grid_export_limit(self):
-        self.loop.run_until_complete(self.get_grid_export_limit())
-        self.assertEqual('7f039d900001a195', self.request.hex())
-
-    def test_set_grid_export_limit(self):
-        self.loop.run_until_complete(self.set_grid_export_limit(100))
-        self.assertEqual('7f069d900064adbe', self.request.hex())
+        self.loop.run_until_complete(self.write_setting('shadow_scan', 1))
+        self.assertEqual('7f069d8600018c51', self.request.hex())
 
 
 class GW8K_DT_Test(DtMock):