Remove unused pattern

lib/pleroma/instances/instance.ex

@@ -193,15 +193,14 @@ defp do_update_metadata(%URI{host: host} = uri, existing_record) do
 
       Logger.info("Creating metadata for #{host}")
 
-      {:ok, instance} =
+      %Instance{}
-        %Instance{}
+      |> changeset(%{
-        |> changeset(%{
+        host: host,
-          host: host,
+        favicon: favicon,
-          favicon: favicon,
+        nodeinfo: nodeinfo,
-          nodeinfo: nodeinfo,
+        metadata_updated_at: NaiveDateTime.utc_now()
-          metadata_updated_at: NaiveDateTime.utc_now()
+      })
-        })
+      |> Repo.insert()
-        |> Repo.insert()
     end
   end