chore(alerts): Remove unused logging (#87216)

Remove some logging we're not using anymore - while there is still an
open GH issue about failure rate alerting, we have not been able to
dedicate the time to investigating it and collecting logs we don't look
at for 6 months is wasteful. The more recent part @mifu67 added we have
solved, but we kind of piggybacked on the feature flag for a different
problem.

Author: ceorourke

src/sentry/incidents/subscription_processor.py

@@ -411,18 +411,6 @@ def process_update(self, subscription_update: QuerySubscriptionUpdate) -> None:
             )
 
         aggregation_value = self.get_aggregation_value(subscription_update)
-        if features.has(
-            "organizations:failure-rate-metric-alert-logging",
-            self.subscription.project.organization,
-        ):
-            logger.info(
-                "Update value in subscription processor",
-                extra={
-                    "result": subscription_update,
-                    "aggregation_value": aggregation_value,
-                    "rule_id": self.alert_rule.id,
-                },
-            )
 
         has_anomaly_detection = features.has(
             "organizations:anomaly-detection-alerts", self.subscription.project.organization
@@ -444,18 +432,6 @@ def process_update(self, subscription_update: QuerySubscriptionUpdate) -> None:
                     last_update=self.last_update.timestamp(),
                     aggregation_value=aggregation_value,
                 )
-            # XXX (mifu67): log problematic rule, to be deleted later
-            if features.has(
-                "feature.organizations:failure-rate-metric-alert-logging",
-                self.subscription.project.organization,
-            ):
-                logger.info(
-                    "Received this response from Seer",
-                    extra={
-                        "potential_anomalies": potential_anomalies,
-                        "alert_rule_id": self.alert_rule.id,
-                    },
-                )
             if potential_anomalies is None:
                 logger.info(
                     "No potential anomalies found",