Fix dialyzer errors due to deprecated usage of put_layout/2

lib/pleroma/web/embed_controller.ex

@@ -11,8 +11,6 @@ defmodule Pleroma.Web.EmbedController do
 
   alias Pleroma.Web.ActivityPub.Visibility
 
-  plug(:put_layout, :embed)
-
   def show(conn, %{"id" => id}) do
     with %Activity{local: true} = activity <-
            Activity.get_by_id_with_object(id),

lib/pleroma/web/o_status/o_status_controller.ex

@@ -112,7 +112,6 @@ defmodule Pleroma.Web.OStatus.OStatusController do
          %{data: %{"attachment" => [%{"url" => [url | _]} | _]}} <- object,
          true <- String.starts_with?(url["mediaType"], ["audio", "video"]) do
       conn
-      |> put_layout(:metadata_player)
       |> put_resp_header("x-frame-options", "ALLOW")
       |> put_resp_header(
         "content-security-policy",

lib/pleroma/web/static_fe/static_fe_controller.ex

@@ -13,7 +13,6 @@ defmodule Pleroma.Web.StaticFE.StaticFEController do
   alias Pleroma.Web.Metadata
   alias Pleroma.Web.Router.Helpers
 
-  plug(:put_layout, :static_fe)
   plug(:assign_id)
 
   @page_keys ["max_id", "min_id", "limit", "since_id", "order"]