fix: remove unneeded return

src/cal_tools/calcat_interface.py

@@ -127,7 +127,6 @@ class CalCatApi(metaclass=ClientWrapper):
                 return float(value)
             except:
                 return str(value)
-            return value
 
         return {
             "parameters_conditions_attributes": [{

src/cal_tools/calcat_interface2.py

@@ -477,7 +477,6 @@ class CalibrationData(Mapping):
                 return float(value)
             except:
                 return str(value)
-            return value
 
         return {
             "parameters_conditions_attributes": [{