diff --git a/tcms/core/forms/fields.py b/tcms/core/forms/fields.py
index 6f94756f64..71902856bf 100644
--- a/tcms/core/forms/fields.py
+++ b/tcms/core/forms/fields.py
@@ -41,10 +41,3 @@ def clean(self, value):
                         (Q(email=value) | Q(username=value)))
                 except User.DoesNotExist:
                     raise ValidationError('Unknown user: "%s"' % value)
-
-
-class StripURLField(forms.URLField):
-    def to_python(self, value):
-        if isinstance(value, str):
-            value = value.strip()
-        return super(StripURLField, self).to_python(value)
diff --git a/tcms/management/models.py b/tcms/management/models.py
index 70fa6d7f28..41656b7c14 100755
--- a/tcms/management/models.py
+++ b/tcms/management/models.py
@@ -100,14 +100,6 @@ class Meta:
     def __str__(self):
         return self.value
 
-    @classmethod
-    def string_to_id(cls, product_id, value):
-        try:
-            return cls.objects.get(product_id=product_id,
-                                   value=value).pk
-        except cls.DoesNotExist:
-            return None
-
 
 class Build(TCMSActionModel):
     name = models.CharField(max_length=255)