TC-CADMIN-1.11: Remove an unused function (project-chip#41417)

* Is this function called anywhere

* linter

Author: cecille

src/python_testing/TC_CADMIN_1_11.py

@@ -35,7 +35,6 @@
 import logging
 import random
 from time import sleep
-from typing import Optional
 
 from mobly import asserts
 from support_modules.cadmin_support import CADMINBaseTest
@@ -66,23 +65,6 @@ async def OpenCommissioningWindow(self, th, expectedErrCode) -> CommissioningPar
             asserts.assert_true(errcode.sdk_code == expectedErrCode,
                                 'Unexpected error code returned from CommissioningComplete')
 
-    async def OpenBasicCommissioningWindow(self, th: ChipDeviceCtrl, expectedErrCode: Optional[Clusters.AdministratorCommissioning.Enums.StatusCode] = None) -> CommissioningParameters:
-        if not expectedErrCode:
-            params = await th.OpenBasicCommissioningWindow(
-                nodeId=self.dut_node_id, timeout=self.timeout)
-            return params
-
-        else:
-            ctx = asserts.assert_raises(ChipStackError)
-            with ctx:
-                await th.OpenBasicCommissioningWindow(
-                    nodeId=self.dut_node_id, timeout=self.timeout)
-            errcode = ctx.exception.chip_error
-            logging.info('Commissioning complete done. Successful? {}, errorcode = {}'.format(errcode.is_success, errcode))
-            asserts.assert_false(errcode.is_success, 'Commissioning complete did not error as expected')
-            asserts.assert_true(errcode.sdk_code == expectedErrCode,
-                                'Unexpected error code returned from CommissioningComplete')
-
     def steps_TC_CADMIN_1_11(self) -> list[TestStep]:
         return [
             TestStep(1, "Commissioning, already done", is_commissioning=True),