Revert "Merge branch 'master' of https://github.com/discourse/discourse"

This reverts commit e62a85cf6fd81a2a34aff6144bd36b9ac459964a, reversing
changes made to 2660c2e21d84bea667e1ea339f91cda352328062.

app/assets/javascripts/admin/models/admin-user.js

@@ -77,6 +77,12 @@ const AdminUser = User.extend({
     });
   },
 
+  revokeApiKey() {
+    return ajax(`/admin/users/${this.id}/revoke_api_key`, {
+      type: "DELETE"
+    }).then(() => this.set("api_key", null));
+  },
+
   deleteAllPosts() {
     let deletedPosts = 0;
     const user = this;