feat: remove deprecated coaching

linting, fixing pr comment

lms/djangoapps/course_home_api/progress/views.py

@@ -142,7 +142,7 @@ class ProgressTabView(RetrieveAPIView):
     serializer_class = ProgressTabSerializer
 
     def _get_student_user(self, request, course_key, student_id, is_staff):
-        """Gets the student User object, either from masquerading, or normal actual request"""
+        """Gets the student User object, either from coaching, masquerading, or normal actual request"""
         if student_id:
             try:
                 student_id = int(student_id)

openedx/core/djangoapps/external_user_ids/models.py

@@ -21,9 +21,9 @@ class ExternalIdType(TimeStampedModel):
     .. no_pii:
     """
 
-    CALIPER = "caliper"
-    XAPI = "xapi"
-    LTI = "lti"
+    CALIPER = 'caliper'
+    XAPI = 'xapi'
+    LTI = 'lti'
 
     name = models.CharField(max_length=32, blank=False, unique=True, db_index=True)
     description = models.TextField()