Remove unused function (#5950)

app/controllers/api/base_controller.rb

@@ -72,19 +72,4 @@ class Api::BaseController < ApplicationController
   def render_empty
     render json: {}, status: 200
   end
-
-  def set_maps(statuses) # rubocop:disable Style/AccessorMethodName
-    if current_account.nil?
-      @reblogs_map    = {}
-      @favourites_map = {}
-      @mutes_map      = {}
-      return
-    end
-
-    status_ids       = statuses.compact.flat_map { |s| [s.id, s.reblog_of_id] }.uniq
-    conversation_ids = statuses.compact.map(&:conversation_id).compact.uniq
-    @reblogs_map     = Status.reblogs_map(status_ids, current_account)
-    @favourites_map  = Status.favourites_map(status_ids, current_account)
-    @mutes_map       = Status.mutes_map(conversation_ids, current_account)
-  end
 end