Remove functionbeat tutorial and translations (elastic#199301)

## Summary

Remove functionbeat tutorial and translations. It's been deprecated and won't be
shipped on 9.0

### Checklist

Delete any items that are not applicable to this PR.

### Risk Matrix

I'm not sure, its just deleting code/documentation

### For maintainers

- [ ] This was checked for breaking API changes and was [labeled
appropriately](https://www.elastic.co/guide/en/kibana/master/contributing.html#_add_your_labels)
- [ ] This will appear in the **Release Notes** and follow the
[guidelines](https://www.elastic.co/guide/en/kibana/master/contributing.html#kibana-release-notes-process)

## Related issues

- Relates elastic/beats#40745
- elastic#193030

(cherry picked from commit 710c4cc)

# Conflicts:
#	api_docs/telemetry.devdocs.json
#	x-pack/plugins/translations/translations/zh-CN.json

api_docs/telemetry.devdocs.json

@@ -630,7 +630,7 @@
               "When the data comes from a matching index-pattern, the name of the pattern"
             ],
             "signature": [
-              "\"search\" | \"logstash\" | \"alerts\" | \"apm\" | \"metricbeat\" | \"suricata\" | \"zeek\" | \"enterprise-search\" | \"app-search\" | \"magento2\" | \"magento\" | \"shopify\" | \"wordpress\" | \"drupal\" | \"joomla\" | \"sharepoint\" | \"squarespace\" | \"sitecore\" | \"weebly\" | \"acquia\" | \"filebeat\" | \"generic-filebeat\" | \"generic-metricbeat\" | \"functionbeat\" | \"generic-functionbeat\" | \"heartbeat\" | \"generic-heartbeat\" | \"generic-logstash\" | \"fluentd\" | \"telegraf\" | \"prometheusbeat\" | \"fluentbit\" | \"nginx\" | \"apache\" | \"generic-logs\" | \"endgame\" | \"logs-endpoint\" | \"metrics-endpoint\" | \"siem-signals\" | \"auditbeat\" | \"winlogbeat\" | \"packetbeat\" | \"tomcat\" | \"artifactory\" | \"aruba\" | \"barracuda\" | \"bluecoat\" | \"arcsight\" | \"checkpoint\" | \"cisco\" | \"citrix\" | \"cyberark\" | \"cylance\" | \"fireeye\" | \"fortinet\" | \"infoblox\" | \"kaspersky\" | \"mcafee\" | \"paloaltonetworks\" | \"rsa\" | \"snort\" | \"sonicwall\" | \"sophos\" | \"squid\" | \"symantec\" | \"tippingpoint\" | \"trendmicro\" | \"tripwire\" | \"zscaler\" | \"sigma_doc\" | \"ecs-corelight\" | \"wazuh\" | \"meow\" | \"host_risk_score\" | \"user_risk_score\" | undefined"
+              "\"search\" | \"logstash\" | \"alerts\" | \"apm\" | \"metricbeat\" | \"suricata\" | \"zeek\" | \"enterprise-search\" | \"app-search\" | \"magento2\" | \"magento\" | \"shopify\" | \"wordpress\" | \"drupal\" | \"joomla\" | \"sharepoint\" | \"squarespace\" | \"sitecore\" | \"weebly\" | \"acquia\" | \"filebeat\" | \"generic-filebeat\" | \"generic-metricbeat\" | \"heartbeat\" | \"generic-heartbeat\" | \"generic-logstash\" | \"fluentd\" | \"telegraf\" | \"prometheusbeat\" | \"fluentbit\" | \"nginx\" | \"apache\" | \"dsns-logs\" | \"generic-logs\" | \"endgame\" | \"logs-endpoint\" | \"metrics-endpoint\" | \"siem-signals\" | \"auditbeat\" | \"winlogbeat\" | \"packetbeat\" | \"tomcat\" | \"artifactory\" | \"aruba\" | \"barracuda\" | \"bluecoat\" | \"arcsight\" | \"checkpoint\" | \"cisco\" | \"citrix\" | \"cyberark\" | \"cylance\" | \"fireeye\" | \"fortinet\" | \"infoblox\" | \"kaspersky\" | \"mcafee\" | \"paloaltonetworks\" | \"rsa\" | \"snort\" | \"sonicwall\" | \"sophos\" | \"squid\" | \"symantec\" | \"tippingpoint\" | \"trendmicro\" | \"tripwire\" | \"zscaler\" | \"sigma_doc\" | \"ecs-corelight\" | \"wazuh\" | \"meow\" | \"host_risk_score\" | \"user_risk_score\" | undefined"
             ],
             "path": "src/plugins/telemetry/server/telemetry_collection/get_data_telemetry/get_data_telemetry.ts",
             "deprecated": false,
@@ -856,4 +856,4 @@
     "misc": [],
     "objects": []
   }
-}
+}