Onboarding: Remove virtual firehose card (#183929)

As the firehose integration is GA now and includes all relevant
documentation, it's not necessary to have a link to the docs page from
the onboarding flow:
https://www.elastic.co/guide/en/kinesis/current/aws-firehose-setup-guide.html

This PR removes it

x-pack/plugins/observability_solution/observability_onboarding/public/application/onboarding_flow_form/use_virtual_search_results.ts

@@ -11,10 +11,9 @@ import { CustomCard } from '../packages_list/types';
 
 export function useVirtualSearchResults(): CustomCard[] {
   const {
-    services: { application, http },
+    services: { application },
   } = useKibana();
   const getUrlForApp = application?.getUrlForApp;
-  const basePath = http?.basePath;
 
   return [
     {
@@ -43,30 +42,5 @@ export function useVirtualSearchResults(): CustomCard[] {
       integration: '',
       isCollectionCard: false,
     },
-    {
-      id: 'aws-firehose-virtual',
-      type: 'virtual',
-      title: i18n.translate('xpack.observability_onboarding.packageList.amazonFirehoseTitle', {
-        defaultMessage: 'Amazon Firehose',
-      }),
-      description: i18n.translate(
-        'xpack.observability_onboarding.packageList.amazonFirehoseDescription',
-        {
-          defaultMessage: 'Collect Amazon Firehose logs.',
-        }
-      ),
-      name: 'aws-firehose',
-      categories: [],
-      icons: [
-        {
-          type: 'svg',
-          src: basePath?.prepend('/plugins/observabilityOnboarding/assets/aws_firehose.svg') ?? '',
-        },
-      ],
-      url: 'https://www.elastic.co/guide/en/kinesis/current/aws-firehose-setup-guide.html',
-      version: '',
-      integration: '',
-      isCollectionCard: false,
-    },
   ];
 }

x-pack/plugins/observability_solution/observability_onboarding/public/application/quickstart_flows/custom_logs/index.tsx

@@ -23,14 +23,7 @@ interface WizardState {
   logFilePaths: string[];
   namespace: string;
   customConfigurations: string;
-  logsType?:
-    | 'system'
-    | 'sys'
-    | 'http-endpoint'
-    | 'opentelemetry'
-    | 'amazon-firehose'
-    | 'log-file'
-    | 'service';
+  logsType?: 'system' | 'sys' | 'http-endpoint' | 'opentelemetry' | 'log-file' | 'service';
   uploadType?: 'log-file' | 'api-key';
   elasticAgentPlatform: 'linux-tar' | 'macos' | 'windows' | 'deb' | 'rpm';
   autoDownloadConfig: boolean;