Remove flag that hides event streaming from graphQL schema

Feature is still behind a default-off flag via authorization, but
needs to be available globally in the schema for a gradual
rollout.

Changelog: added
EE: true

doc/api/graphql/reference/index.md

@@ -10343,7 +10343,7 @@ four standard [pagination arguments](#connection-pagination-arguments):
 | <a id="groupemailsdisabled"></a>`emailsDisabled` | [`Boolean`](#boolean) | Indicates if a group has email notifications disabled. |
 | <a id="groupepicboards"></a>`epicBoards` | [`EpicBoardConnection`](#epicboardconnection) | Find epic boards. (see [Connections](#connections)) |
 | <a id="groupepicsenabled"></a>`epicsEnabled` | [`Boolean`](#boolean) | Indicates if Epics are enabled for namespace. |
-| <a id="groupexternalauditeventdestinations"></a>`externalAuditEventDestinations` | [`ExternalAuditEventDestinationConnection`](#externalauditeventdestinationconnection) | External locations that receive audit events belonging to the group. Available only when feature flag `ff_external_audit_events_namespace` is enabled. This flag is disabled by default, because the feature is experimental and is subject to change without notice. (see [Connections](#connections)) |
+| <a id="groupexternalauditeventdestinations"></a>`externalAuditEventDestinations` | [`ExternalAuditEventDestinationConnection`](#externalauditeventdestinationconnection) | External locations that receive audit events belonging to the group. (see [Connections](#connections)) |
 | <a id="groupfullname"></a>`fullName` | [`String!`](#string) | Full name of the namespace. |
 | <a id="groupfullpath"></a>`fullPath` | [`ID!`](#id) | Full path of the namespace. |
 | <a id="groupid"></a>`id` | [`ID!`](#id) | ID of the namespace. |

ee/app/graphql/ee/types/group_type.rb

@@ -97,7 +97,6 @@ module EE
               EE::Types::AuditEvents::ExternalAuditEventDestinationType.connection_type,
               null: true,
               description: 'External locations that receive audit events belonging to the group.',
-              feature_flag: :ff_external_audit_events_namespace,
               authorize: :admin_external_audit_events
       end
     end