[Fleet] Remove timestamp field from component template (#99619)

* Remove timestamp field from component template

Elasticsearch bug fixed upstream allows us to remove this field from the
template: elastic/elasticsearch/#58956

Closes #71095

* Remove timestamp field from functional test

x-pack/plugins/fleet/server/services/epm/elasticsearch/template/install.ts

@@ -198,15 +198,6 @@ function buildComponentTemplates(registryElasticsearch: RegistryElasticsearch |
       template: {
         mappings: {
           ...registryElasticsearch['index_template.mappings'],
-          // temporary change until https://github.com/elastic/elasticsearch/issues/58956 is resolved
-          // hopefully we'll be able to remove the entire properties section once that issue is resolved
-          properties: {
-            // if the timestamp_field changes here: https://github.com/elastic/kibana/blob/master/x-pack/plugins/fleet/server/services/epm/elasticsearch/template/template.ts#L309
-            // we'll need to update this as well
-            '@timestamp': {
-              type: 'date',
-            },
-          },
         },
       },
     };

x-pack/test/fleet_api_integration/apis/epm/install_overrides.ts

@@ -62,12 +62,6 @@ export default function ({ getService }: FtrProviderContext) {
         expect(body.component_templates[0].component_template.template.mappings.dynamic).to.be(
           false
         );
-        // Make sure that the `@timestamp` field exists and is set to date
-        // this can be removed once https://github.com/elastic/elasticsearch/issues/58956 is resolved
-        expect(
-          body.component_templates[0].component_template.template.mappings.properties['@timestamp']
-            .type
-        ).to.be('date');
 
         ({ body } = await es.transport.request({
           method: 'GET',

x-pack/test/fleet_api_integration/apis/epm/update_assets.ts

@@ -207,7 +207,6 @@ export default function (providerContext: FtrProviderContext) {
       expect(res.statusCode).equal(200);
       expect(res.body.component_templates[0].component_template.template.mappings).eql({
         dynamic: true,
-        properties: { '@timestamp': { type: 'date' } },
       });
       const resSettings = await es.transport.request({
         method: 'GET',