Remove a false comment

(groupings do imply issues, it's a FK)

ingest/views.py

@@ -221,6 +221,7 @@ class BaseIngestAPIView(View):
                 Max("digest_order"))["digest_order__max"]
             issue_digest_order = max_current + 1 if max_current is not None else 1
 
+            # if the grouping doesn't exist, the issue doesn't exist either (because a grouping implies an issue).
             issue = Issue.objects.create(
                 digest_order=issue_digest_order,
                 project_id=event_metadata["project_id"],
@@ -229,9 +230,6 @@ class BaseIngestAPIView(View):
                 digested_event_count=1,
                 **denormalized_fields,
             )
-            # even though in our data-model a given grouping does not imply a single Issue (in fact, that's the whole
-            # point of groupings as a data-model), at-creation such implication does exist, because manual information
-            # ("this grouper is actually part of some other issue") can by definition not yet have been specified.
             issue_created = True
 
             grouping = Grouping.objects.create(