Removed repeated function

Author: syrusakbary

graphene_django/forms/converter.py

@@ -83,8 +83,3 @@ def convert_form_field_to_time(field):
 @convert_form_field.register(GlobalIDFormField)
 def convert_form_field_to_id(field):
     return ID(required=field.required)
-
-
-@convert_form_field.register(forms.TimeField)
-def convert_form_field_to_time(field):
-    return Time(description=field.help_text, required=field.required)