ref(flags): Remove organizations:dynamic-sampling-minimum-sample-rate

[wedamija]

Dev-only flag registered Jun 2025, never rolled out to customers. Remove the flag registration and the unreleased gated code paths.

[github-actions]

🚨 Warning: This pull request contains Frontend and Backend changes!

It's discouraged to make changes to Sentry's Frontend and Backend in a single pull request. The Frontend and Backend are not atomically deployed. If the changes are interdependent of each other, they must be separated into two pull requests and be made forward or backwards compatible, such that the Backend or Frontend can be safely deployed independently.

Have questions? Please ask in the #discuss-dev-infra channel.

[github-actions]

📊 Type Coverage Diff

✅ No new type safety issues introduced. Coverage: 93.53%

[cursor]

Cursor Bugbot has reviewed your changes and found 2 potential issues.

^{❌ Bugbot Autofix is OFF. To automatically fix reported issues with cloud agents, enable autofix in the Cursor dashboard.}

^{Reviewed by Cursor Bugbot for commit da89d9f. Configure here.}

[cursor]

Leftover minimumSampleRate label after feature removal

Low Severity

The retentionPrioritiesLabels object still contains the minimumSampleRate entry on line 48, but all code paths that used this label in form fields have been removed in this PR. This label is now unreachable dead code since the feature was never rolled out and no audit log entries referencing it exist.

 

^{Reviewed by Cursor Bugbot for commit da89d9f. Configure here.}

[github-actions]

Backend Test Failures

Failures on 8d6fd0f in this run:

tests/sentry/core/endpoints/test_project_details.py::TestProjectDetailsDynamicSamplingBiases::test_dynamic_sampling_bias_add_new_bias_audit_log — log

[gw0] linux -- Python 3.13.1 /home/runner/work/sentry/sentry/.venv/bin/python3
tests/sentry/core/endpoints/test_project_details.py:2102: in test_dynamic_sampling_bias_add_new_bias_audit_log
    audit_entry = AuditLogEntry.objects.get(
.venv/lib/python3.13/site-packages/django/db/models/manager.py:87: in manager_method
    return getattr(self.get_queryset(), name)(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.venv/lib/python3.13/site-packages/django/db/models/query.py:635: in get
    raise self.model.DoesNotExist(
E   sentry.models.auditlogentry.AuditLogEntry.DoesNotExist: AuditLogEntry matching query does not exist.

tests/sentry/core/endpoints/test_project_details.py::TestProjectDetailsDynamicSamplingBiases::test_dynamic_sampling_bias_enable_audit_log — log

[gw0] linux -- Python 3.13.1 /home/runner/work/sentry/sentry/.venv/bin/python3
tests/sentry/core/endpoints/test_project_details.py:2043: in test_dynamic_sampling_bias_enable_audit_log
    audit_entry = AuditLogEntry.objects.get(
.venv/lib/python3.13/site-packages/django/db/models/manager.py:87: in manager_method
    return getattr(self.get_queryset(), name)(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.venv/lib/python3.13/site-packages/django/db/models/query.py:635: in get
    raise self.model.DoesNotExist(
E   sentry.models.auditlogentry.AuditLogEntry.DoesNotExist: AuditLogEntry matching query does not exist.