Have core module use common's JsonResponse utility instead of LMS's.

openedx/core/djangoapps/credit/api/provider.py

@@ -9,7 +9,6 @@ import uuid
 import pytz
 from django.db import transaction
 
-from lms.djangoapps.django_comment_client.utils import JsonResponse
 from edx_proctoring.api import get_last_exam_completion_date
 from openedx.core.djangoapps.credit.exceptions import (
     UserIsNotEligible,
@@ -31,6 +30,7 @@ from student.models import (
 )
 from openedx.core.djangoapps.credit.signature import signature, get_shared_secret_key
 from util.date_utils import to_timestamp
+from util.json_request import JsonResponse
 
 
 # TODO: Cleanup this mess! ECOM-2908