Hides legacy unused actions and removes hiding of entire destination

Author: nick-Ag

src/connections/destinations/catalog/actions-facebook-custom-audiences/index.md

@@ -1,9 +1,18 @@
 ---
 title: Facebook Custom Audiences (Actions)
 id: 645d5fc12eb891cf0a93fe4b
-hidden: true
+hidden: false
 beta: true
 strat: facebook
+hide_action:
+  - id: 3JEx23g4qgFzSECyYopNA4
+    name: "Add"
+  - id: 99Dj24PD8pAweMvTnM8vD8
+    name: "Sync Reverse ETL"
+  - id: eG6ydbfKbfJvQZ8gQpgakz
+    name: "Sync Engage"
+  - id: p74MiTEFmUUeoC7SKcT7Ri
+    name: "Remove"
 ---
 
 Deliver effective Facebook Ads campaigns by defining and syncing [custom audiences](https://developers.facebook.com/docs/marketing-api/audiences/guides/custom-audiences){:target="_blank”} to power ad suppression, acquisition (using lookalikes), retargeting, and more.