Revert "Mastodon API: Fake support for loading filters"

This reverts commit c1d07da4e1.

The fake support was superseded by 6e030129fb which actually implements the faked filters API.

This change removes the fake support and ensures that the actual implementation is used.

lib/pleroma/web/mastodon_api/mastodon_api_controller.ex

@@ -1189,8 +1189,4 @@ def suggestions(%{assigns: %{user: user}} = conn, _) do
       json(conn, [])
     end
   end
-
-  def filters(conn, _) do
-    json(conn, [])
-  end
 end

lib/pleroma/web/router.ex

@@ -172,8 +172,6 @@ defmodule Pleroma.Web.Router do
     delete("/filters/:id", MastodonAPIController, :delete_filter)
 
     get("/suggestions", MastodonAPIController, :suggestions)
-
-    get("/filters", MastodonAPIController, :filters)
   end
 
   scope "/api/web", Pleroma.Web.MastodonAPI do