ref(api): remove OrganizationEventsSpansHistogramEndpoint (#110339)

The frontend consumer (spanHistogramQuery.tsx) was deleted in
#99522 (Sep 2025) when the
transaction spans page was removed. The endpoint has had zero callers
since.

Removing `spans_histogram_query` in a followup

---------

Co-authored-by: Claude <noreply@anthropic.com>
Co-authored-by: getsantry[bot] <66042841+getsantry[bot]@users.noreply.github.com>

Author: 3 people

.github/CODEOWNERS

@@ -200,7 +200,6 @@ pnpm-lock.yaml                                           @getsentry/owners-js-de
 /src/sentry/api/endpoints/organization_events_histogram.py                  @getsentry/data-browsing
 /src/sentry/api/endpoints/organization_events_facets_performance.py         @getsentry/data-browsing
 /src/sentry/api/endpoints/organization_events_spans_performance.py          @getsentry/data-browsing
-/src/sentry/api/endpoints/organization_events_spans_histogram.py            @getsentry/data-browsing
 /src/sentry/api/endpoints/organization_events_trace.py                      @getsentry/data-browsing
 /src/sentry/api/endpoints/organization_events_trends.py                     @getsentry/data-browsing
 /src/sentry/api/endpoints/organization_events_trends_v2.py                  @getsentry/data-browsing
@@ -220,7 +219,6 @@ src/sentry/api/endpoints/organization_attribute_mappings.py                 @get
 /tests/snuba/api/endpoints/test_organization_events_histogram.py            @getsentry/data-browsing
 /tests/snuba/api/endpoints/test_organization_events_facets_performance.py   @getsentry/data-browsing
 /tests/snuba/api/endpoints/test_organization_events_spans_performance.py    @getsentry/data-browsing
-/tests/snuba/api/endpoints/test_organization_events_spans_histogram.py      @getsentry/data-browsing
 /tests/snuba/api/endpoints/test_organization_events_trace.py                @getsentry/data-browsing
 /tests/snuba/api/endpoints/test_organization_events_trends.py               @getsentry/data-browsing
 /tests/sentry/api/endpoints/test_organization_events_trends_v2.py           @getsentry/data-browsing

src/sentry/api/endpoints/organization_events_spans_histogram.py

@@ -735,7 +735,6 @@
     OrganizationSpansSamplesEndpoint,
 )
 from .endpoints.organization_events_span_ops import OrganizationEventsSpanOpsEndpoint
-from .endpoints.organization_events_spans_histogram import OrganizationEventsSpansHistogramEndpoint
 from .endpoints.organization_events_spans_performance import (
     OrganizationEventsSpansExamplesEndpoint,
     OrganizationEventsSpansPerformanceEndpoint,
@@ -1845,11 +1844,6 @@ def create_group_urls(name_prefix: str) -> list[URLPattern | URLResolver]:
         OrganizationEventsHistogramEndpoint.as_view(),
         name="sentry-api-0-organization-events-histogram",
     ),
-    re_path(
-        r"^(?P<organization_id_or_slug>[^/]+)/events-spans-histogram/$",
-        OrganizationEventsSpansHistogramEndpoint.as_view(),
-        name="sentry-api-0-organization-events-spans-histogram",
-    ),
     re_path(
         r"^(?P<organization_id_or_slug>[^/]+)/events-trends/$",
         OrganizationEventsTrendsEndpoint.as_view(),

src/sentry/api/urls.py

@@ -327,7 +327,6 @@
     "/api/0/organizations/{organization_id_or_slug}/metrics-compatibility-sums/": {"GET"},
     "/api/0/organizations/{organization_id_or_slug}/missing-members/": {"GET"},
     "/api/0/organizations/{organization_id_or_slug}/events-histogram/": {"GET"},
-    "/api/0/organizations/{organization_id_or_slug}/events-spans-histogram/": {"GET"},
     "/api/0/organizations/{organization_id_or_slug}/events-trends/": {"GET"},
     "/api/0/organizations/{organization_id_or_slug}/events-vitals/": {"GET"},
     "/api/0/organizations/{organization_id_or_slug}/events-has-measurements/": {"GET"},

src/sentry/apidocs/api_publish_status_allowlist_dont_modify.py

@@ -39,7 +39,6 @@
     "OrganizationEventsNewTrendsStatsEndpoint",
     "OrganizationEventsRelatedIssuesEndpoint",
     "OrganizationEventsRootCauseAnalysisEndpoint",
-    "OrganizationEventsSpansHistogramEndpoint",
     "OrganizationEventsVitalsEndpoint",
     "OrganizationGroupIndexEndpoint",
     "OrganizationGroupIndexStatsEndpoint",

src/sentry/conf/api_pagination_allowlist_do_not_modify.py

@@ -246,7 +246,6 @@ export type KnownSentryApiUrls =
   | '/organizations/$organizationIdOrSlug/events-meta/'
   | '/organizations/$organizationIdOrSlug/events-root-cause-analysis/'
   | '/organizations/$organizationIdOrSlug/events-span-ops/'
-  | '/organizations/$organizationIdOrSlug/events-spans-histogram/'
   | '/organizations/$organizationIdOrSlug/events-spans-performance/'
   | '/organizations/$organizationIdOrSlug/events-spans-stats/'
   | '/organizations/$organizationIdOrSlug/events-spans/'