deprecate(related_issues): Drop support for doing all types of relat…

…ed issues (#70793)

This is a follow-up to #70504.
Once the UI stops using this approach we will merge this change.

This got temporarily reverted in #70606 since we had to revert the UI
PR.

src/sentry/api/endpoints/issues/related_issues.py

@@ -5,7 +5,6 @@
 from sentry.api.api_publish_status import ApiPublishStatus
 from sentry.api.base import region_silo_endpoint
 from sentry.api.bases.group import GroupEndpoint
-from sentry.issues.related import find_related_issues  # To be deprecated
 from sentry.issues.related import RELATED_ISSUES_ALGORITHMS
 from sentry.models.group import Group
 from sentry.types.ratelimit import RateLimit, RateLimitCategory
@@ -35,13 +34,6 @@ def get(self, request: Request, group: Group) -> Response:
         :pparam Group group: the group object
         """
         # The type of related issues to retrieve. Can be either `same_root_cause` or `trace_connected`.
-        related_type = request.query_params.get("type")
-        related_issues: list[dict[str, str | list[int] | dict[str, str]]] = []
-
-        if related_type in RELATED_ISSUES_ALGORITHMS:
-            data, meta = RELATED_ISSUES_ALGORITHMS[related_type](group)
-            return Response({"type": related_type, "data": data, "meta": meta})
-        else:
-            # XXX: We will be deprecating this approach soon
-            related_issues = find_related_issues(group)
-            return Response({"data": [related_set for related_set in related_issues]})
+        related_type = request.query_params["type"]
+        data, meta = RELATED_ISSUES_ALGORITHMS[related_type](group)
+        return Response({"type": related_type, "data": data, "meta": meta})

src/sentry/issues/related/__init__.py

@@ -1,7 +1,5 @@
 """This module exports a function to find related issues. It groups them by type."""
 
-from sentry.models.group import Group
-
 from .same_root_cause import same_root_cause_analysis
 from .trace_connected import trace_connected_analysis
 
@@ -11,12 +9,3 @@
     "same_root_cause": same_root_cause_analysis,
     "trace_connected": trace_connected_analysis,
 }
-
-
-def find_related_issues(group: Group) -> list[dict[str, str | list[int] | dict[str, str]]]:
-    related_issues: list[dict[str, str | list[int] | dict[str, str]]] = []
-    for key, func in RELATED_ISSUES_ALGORITHMS.items():
-        data, meta = func(group)
-        related_issues.append({"type": key, "data": data, "meta": meta})
-
-    return related_issues