[8.9] remove native config for selecting fetch strategy (#161798) (#1…

…61866)

# Backport

This will backport the following commits from `main` to `8.9`:
- [remove native config for selecting fetch strategy
(#161798)](#161798)

<!--- Backport version: 8.9.7 -->

### Questions ?
Please refer to the [Backport tool
documentation](https://github.com/sqren/backport)

<!--BACKPORT [{"author":{"name":"Sean
Story","email":"[email protected]"},"sourceCommit":{"committedDate":"2023-07-13T13:25:10Z","message":"remove
native config for selecting fetch strategy (#161798)\n\n##
Summary\r\n\r\nPart of
https://github.com/elastic/enterprise-search-team/issues/5162\r\n\r\nEffectively
reverting #161546, as\r\nthe new
strategy has completely replaced the old.\r\n\r\nSee also:
https://github.com/elastic/connectors-python/pull/1255\r\n\r\n### For
maintainers\r\n\r\n- [ ] This was checked for breaking API changes and
was
[labeled\r\nappropriately](https://www.elastic.co/guide/en/kibana/master/contributing.html#kibana-release-notes-process)","sha":"8175c8a95d053cdcad6c8cf61dd767f90b797c58","branchLabelMapping":{"^v8.10.0$":"main","^v(\\d+).(\\d+).\\d+$":"$1.$2"}},"sourcePullRequest":{"labels":["release_note:skip","Team:EnterpriseSearch","v8.9.0","v8.10.0"],"number":161798,"url":"https://github.com/elastic/kibana/pull/161798","mergeCommit":{"message":"remove
native config for selecting fetch strategy (#161798)\n\n##
Summary\r\n\r\nPart of
https://github.com/elastic/enterprise-search-team/issues/5162\r\n\r\nEffectively
reverting #161546, as\r\nthe new
strategy has completely replaced the old.\r\n\r\nSee also:
https://github.com/elastic/connectors-python/pull/1255\r\n\r\n### For
maintainers\r\n\r\n- [ ] This was checked for breaking API changes and
was
[labeled\r\nappropriately](https://www.elastic.co/guide/en/kibana/master/contributing.html#kibana-release-notes-process)","sha":"8175c8a95d053cdcad6c8cf61dd767f90b797c58"}},"sourceBranch":"main","suggestedTargetBranches":["8.9"],"targetPullRequestStates":[{"branch":"8.9","label":"v8.9.0","labelRegex":"^v(\\d+).(\\d+).\\d+$","isSourceBranch":false,"state":"NOT_CREATED"},{"branch":"main","label":"v8.10.0","labelRegex":"^v8.10.0$","isSourceBranch":true,"state":"MERGED","url":"https://github.com/elastic/kibana/pull/161798","number":161798,"mergeCommit":{"message":"remove
native config for selecting fetch strategy (#161798)\n\n##
Summary\r\n\r\nPart of
https://github.com/elastic/enterprise-search-team/issues/5162\r\n\r\nEffectively
reverting #161546, as\r\nthe new
strategy has completely replaced the old.\r\n\r\nSee also:
https://github.com/elastic/connectors-python/pull/1255\r\n\r\n### For
maintainers\r\n\r\n- [ ] This was checked for breaking API changes and
was
[labeled\r\nappropriately](https://www.elastic.co/guide/en/kibana/master/contributing.html#kibana-release-notes-process)","sha":"8175c8a95d053cdcad6c8cf61dd767f90b797c58"}}]}]
BACKPORT-->

Co-authored-by: Sean Story <[email protected]>

x-pack/plugins/enterprise_search/common/connectors/native_connectors.ts

@@ -1652,32 +1652,6 @@ export const NATIVE_CONNECTOR_DEFINITIONS: Record<string, NativeConnector | unde
         validations: [],
         value: false,
       },
-      fetch_users_by_site: {
-        default_value: false,
-        depends_on: [{ field: 'use_document_level_security', value: true }],
-        display: DisplayType.TOGGLE,
-        label: i18n.translate(
-          'xpack.enterpriseSearch.nativeConnectors.sharepoint_online.configuration.fetchUsersBySiteLabel',
-          {
-            defaultMessage: 'Discover users by site membership',
-          }
-        ),
-        options: [],
-        order: 8,
-        required: true,
-        sensitive: false,
-        tooltip: i18n.translate(
-          'xpack.enterpriseSearch.nativeConnectors.sharepoint_online.configuration.fetchUsersBySiteTooltip',
-          {
-            defaultMessage:
-              'When syncing only a small subset of sites, it can be more efficient to only fetch users who have access to those sites. This becomes increasingly inefficient the more sites (and the more users) concerned.',
-          }
-        ),
-        type: FieldType.BOOLEAN,
-        ui_restrictions: [],
-        validations: [],
-        value: false,
-      },
     },
     features: {
       [FeatureName.SYNC_RULES]: {