queries: drop unused query function

lib/pleroma/activity/queries.ex

@@ -7,7 +7,7 @@ defmodule Pleroma.Activity.Queries do
   Contains queries for Activity.
   """
 
-  import Ecto.Query, only: [from: 2, where: 3]
+  import Ecto.Query, only: [from: 2]
 
   @type query :: Ecto.Queryable.t() | Activity.t()
 
@@ -72,22 +72,6 @@ def by_object_id(query, object_id) when is_binary(object_id) do
     )
   end
 
-  @spec by_object_in_reply_to_id(query, String.t(), keyword()) :: query
-  def by_object_in_reply_to_id(query, in_reply_to_id, opts \\ []) do
-    query =
-      if opts[:skip_preloading] do
-        Activity.with_joined_object(query)
-      else
-        Activity.with_preloaded_object(query)
-      end
-
-    where(
-      query,
-      [activity, object: o],
-      fragment("(?)->>'inReplyTo' = ?", o.data, ^to_string(in_reply_to_id))
-    )
-  end
-
   @spec by_type(query, String.t()) :: query
   def by_type(query \\ Activity, activity_type) do
     from(