Remove unused imports

lms/djangoapps/instructor/views/api.py

@@ -10,14 +10,13 @@ import json
 import logging
 import re
 import time
-import requests
 from django.conf import settings
 from django.views.decorators.csrf import ensure_csrf_cookie, csrf_exempt
 from django.views.decorators.http import require_POST, require_http_methods
 from django.views.decorators.cache import cache_control
 from django.core.exceptions import ValidationError, PermissionDenied
 from django.core.mail.message import EmailMessage
-from django.core.exceptions import ObjectDoesNotExist, MultipleObjectsReturned
+from django.core.exceptions import ObjectDoesNotExist
 from django.db import IntegrityError, transaction
 from django.core.urlresolvers import reverse
 from django.core.validators import validate_email
@@ -25,11 +24,9 @@ from django.utils.translation import ugettext as _
 from django.http import HttpResponse, HttpResponseBadRequest, HttpResponseForbidden, HttpResponseNotFound
 from django.utils.html import strip_tags
 from django.shortcuts import redirect
-from util.db import outer_atomic
 import string
 import random
 import unicodecsv
-import urllib
 import decimal
 from student import auth
 from student.roles import GlobalStaff, CourseSalesAdminRole, CourseFinanceAdminRole
@@ -52,7 +49,7 @@ from django_comment_common.models import (
     FORUM_ROLE_MODERATOR,
     FORUM_ROLE_COMMUNITY_TA,
 )
-from edxmako.shortcuts import render_to_response, render_to_string
+from edxmako.shortcuts import render_to_string
 from courseware.models import StudentModule
 from shoppingcart.models import (
     Coupon,
@@ -108,7 +105,6 @@ from .tools import (
     set_due_date_extension,
     strip_if_string,
     bulk_email_is_enabled_for_course,
-    add_block_ids,
 )
 from opaque_keys.edx.keys import CourseKey, UsageKey
 from opaque_keys.edx.locations import SlashSeparatedCourseKey