Removed unused imports

src/models/abstract_reference.py

@@ -1,7 +1,6 @@
 import uuid
 from abc import ABC
 from src.errors.error_proxy import error_proxy
-from src.errors.argument_exception import argument_exception
 from src.validation.validator import validator
 
 class abstract_reference(ABC):

src/models/company_model.py

@@ -1,6 +1,5 @@
 from src.models.abstract_reference import abstract_reference
 from src.settings.settings import settings
-from src.errors.argument_exception import argument_exception
 from src.validation.validator import validator
 
 class company_model (abstract_reference):

src/models/measurement_unit_model.py

@@ -1,5 +1,4 @@
 from src.models.abstract_reference import abstract_reference
-from src.errors.argument_exception import argument_exception
 from src.validation.validator import validator
 
 class measurement_unit_model (abstract_reference):