diff --git a/src/sentry/sentry_apps/services/app/impl.py b/src/sentry/sentry_apps/services/app/impl.py
index 218d010f8436a..e266283516b35 100644
--- a/src/sentry/sentry_apps/services/app/impl.py
+++ b/src/sentry/sentry_apps/services/app/impl.py
@@ -97,12 +97,6 @@ def get_sentry_app_by_slug(self, *, slug: str) -> RpcSentryApp | None:
         except SentryApp.DoesNotExist:
             return None
 
-    def get_installed_for_organization(
-        self, *, organization_id: int
-    ) -> list[RpcSentryAppInstallation]:
-        # Deprecated. Use get_installations_for_organization instead.
-        return self.get_installations_for_organization(organization_id=organization_id)
-
     def get_installations_for_organization(
         self, *, organization_id: int
     ) -> list[RpcSentryAppInstallation]:
diff --git a/src/sentry/sentry_apps/services/app/service.py b/src/sentry/sentry_apps/services/app/service.py
index 731c2f6573fbc..7d8d8f466fcc6 100644
--- a/src/sentry/sentry_apps/services/app/service.py
+++ b/src/sentry/sentry_apps/services/app/service.py
@@ -8,7 +8,6 @@
 from typing import Any
 
 from sentry.auth.services.auth import AuthenticationContext
-from sentry.features.rollout import in_random_rollout
 from sentry.hybridcloud.rpc.caching.service import back_with_silo_cache, back_with_silo_cache_list
 from sentry.hybridcloud.rpc.filter_query import OpaqueSerializedResponse
 from sentry.hybridcloud.rpc.service import RpcService, rpc_method
@@ -61,16 +60,6 @@ def find_installation_by_proxy_user(
     ) -> RpcSentryAppInstallation | None:
         pass
 
-    @rpc_method
-    @abc.abstractmethod
-    def get_installed_for_organization(
-        self,
-        *,
-        organization_id: int,
-    ) -> list[RpcSentryAppInstallation]:
-        # Deprecated use installations_for_organization instead.
-        pass
-
     def installations_for_organization(
         self, *, organization_id: int
     ) -> list[RpcSentryAppInstallation]:
@@ -79,10 +68,7 @@ def installations_for_organization(
 
         This is a cached wrapper around get_installations_for_organization
         """
-        if in_random_rollout("app_service.installations_for_org.cached"):
-            return get_installations_for_organization(organization_id)
-        else:
-            return self.get_installed_for_organization(organization_id=organization_id)
+        return get_installations_for_organization(organization_id)
 
     @rpc_method
     @abc.abstractmethod
diff --git a/tests/sentry/sentry_apps/tasks/test_sentry_apps.py b/tests/sentry/sentry_apps/tasks/test_sentry_apps.py
index cf3a15b61ab3a..e289f49e55127 100644
--- a/tests/sentry/sentry_apps/tasks/test_sentry_apps.py
+++ b/tests/sentry/sentry_apps/tasks/test_sentry_apps.py
@@ -37,7 +37,6 @@
 from sentry.testutils.helpers import with_feature
 from sentry.testutils.helpers.datetime import before_now, freeze_time
 from sentry.testutils.helpers.eventprocessing import write_event_to_cache
-from sentry.testutils.helpers.options import override_options
 from sentry.testutils.outbox import outbox_runner
 from sentry.testutils.silo import assume_test_silo_mode_of, control_silo_test
 from sentry.testutils.skips import requires_snuba
@@ -333,54 +332,6 @@ def test_error_created_sends_webhook(self, safe_urlopen):
             "Sentry-Hook-Signature",
         }
 
-    @with_feature("organizations:integrations-event-hooks")
-    @override_options({"app_service.installations_for_org.cached": 1.0})
-    def test_error_created_sends_webhook_cached_service_call(self, safe_urlopen):
-        sentry_app = self.create_sentry_app(
-            organization=self.project.organization, events=["error.created"]
-        )
-        install = self.create_sentry_app_installation(
-            organization=self.project.organization, slug=sentry_app.slug
-        )
-
-        one_min_ago = before_now(minutes=1).isoformat()
-        event = self.store_event(
-            data={
-                "message": "Foo bar",
-                "exception": {"type": "Foo", "value": "oh no"},
-                "level": "error",
-                "timestamp": one_min_ago,
-            },
-            project_id=self.project.id,
-            assert_no_errors=False,
-        )
-
-        with self.tasks():
-            post_process_group(
-                is_new=False,
-                is_regression=False,
-                is_new_group_environment=False,
-                cache_key=write_event_to_cache(event),
-                group_id=event.group_id,
-                project_id=self.project.id,
-                eventstream_type=EventStreamEventType.Error,
-            )
-
-        ((args, kwargs),) = safe_urlopen.call_args_list
-        data = json.loads(kwargs["data"])
-
-        assert data["action"] == "created"
-        assert data["installation"]["uuid"] == install.uuid
-        assert data["data"]["error"]["event_id"] == event.event_id
-        assert data["data"]["error"]["issue_id"] == str(event.group_id)
-        assert kwargs["headers"].keys() >= {
-            "Content-Type",
-            "Request-ID",
-            "Sentry-Hook-Resource",
-            "Sentry-Hook-Timestamp",
-            "Sentry-Hook-Signature",
-        }
-
     # TODO(nola): Enable this test whenever we prevent infinite loops w/ error.created integrations
     @pytest.mark.skip(reason="enable this when/if we do prevent infinite error.created loops")
     @with_feature("organizations:integrations-event-hooks")