remove fallback to context_id entirely

lib/pleroma/web/mastodon_api/views/status_view.ex

@@ -60,9 +60,6 @@ defp get_replied_to_activities(activities) do
   defp get_context_id(%{data: %{"context" => context}}) when is_binary(context),
     do: :erlang.crc32(context)
 
-  defp get_context_id(%{data: %{"context_id" => context_id}}) when not is_nil(context_id),
-    do: context_id
-
   defp get_context_id(_), do: nil
 
   # Check if the user reblogged this status

test/pleroma/web/common_api/utils_test.exs

@@ -4,7 +4,6 @@
 
 defmodule Pleroma.Web.CommonAPI.UtilsTest do
   alias Pleroma.Builders.UserBuilder
-  alias Pleroma.Object
   alias Pleroma.Web.CommonAPI
   alias Pleroma.Web.CommonAPI.ActivityDraft
   alias Pleroma.Web.CommonAPI.Utils

test/pleroma/web/mastodon_api/views/status_view_test.exs

@@ -14,7 +14,6 @@ defmodule Pleroma.Web.MastodonAPI.StatusViewTest do
   alias Pleroma.User
   alias Pleroma.UserRelationship
   alias Pleroma.Web.CommonAPI
-  alias Pleroma.Web.CommonAPI.Utils
   alias Pleroma.Web.MastodonAPI.AccountView
   alias Pleroma.Web.MastodonAPI.StatusView