Revert "Add __str__ member"

This reverts commit 2232a91f2e3f8cf449f243d5c4eb8f51d1cfc9e0.

cpdctrl/led_control_device/base.py

@@ -43,7 +43,3 @@ class LedControlDevice(ABC):
         None.
         """
         pass
-
-    @abstractmethod
-    def __str__(self):
-        pass

cpdctrl/led_control_device/impl/test.py

@@ -12,6 +12,3 @@ class TestLedControlDevice(LedControlDevice):
 
     def set_level(self, level: int):
         pass
-
-    def __str__(self):
-        return "Dummy Led Controller"

cpdctrl/led_control_device/impl/thorlabs_dc2200.py

@@ -45,6 +45,3 @@ class DC2200(LedControlDevice):
         rm = pyvisa.ResourceManager()
         instr = rm.open_resource(name)
         return DC2200(instr)
-
-    def __str__(self):
-        return "Thorlabs DC2200"

cpdctrl/led_control_device/impl/thorlabs_ledd1b.py

@@ -45,9 +45,6 @@ class LEDD1B(LedControlDevice):
         else:
             raise ValueError(f"LEDD1B Led controller can only set 0% or 100%")
 
-    def __str__(self):
-        return "Thorlabs LEDD1B"
-
    
 if __name__ == '__main__':
     led = LEDD1B()

cpdctrl/voltage_measurement_device/base.py

@@ -51,6 +51,3 @@ class VoltageMeasurementDevice(ABC):
 
         """
         pass
-    @abstractmethod
-    def __str__(self):
-        pass

cpdctrl/voltage_measurement_device/impl/keithley2700.py

@@ -256,5 +256,3 @@ class Keithley2700(VoltageMeasurementDevice):
         instr = rm.open_resource(name)
         return Keithley2700(instr)
 
-    def __str__(self):
-        return "Keithley 2700"

cpdctrl/voltage_measurement_device/impl/test.py

@@ -52,6 +52,3 @@ class TestVoltageMeasurementDevice(VoltageMeasurementDevice):
 
         """
         pass
-
-    def __str__(self):
-        return "Simulated Voltage Measurement Device"