remove function that ensured back-compatibility to pass mypy

qcodes_contrib_drivers/drivers/Thorlabs/KLS1550.py

@@ -27,4 +27,4 @@ def __init__(self,
                  **kwargs):
         self._dll_path = 'Thorlabs. .dll'
         super().__init__(name, serial_number, self._dll_path,
-                         self._simulation, self._polling, **kwargs)
+                         simulation, polling, **kwargs)