Revert "Pretend to allow full path to backup files". This breaks our jobs that backup to a full path.

script/discourse

@@ -40,7 +40,6 @@ WHERE table_schema='public' and (data_type like 'char%' or data_type like 'text%
 
   desc "backup", "Backup a discourse forum"
   def backup(filename = nil)
-    filename = File.basename(filename)
     load_rails
     require "backup_restore"
     require "export/exporter"
@@ -63,7 +62,6 @@ WHERE table_schema='public' and (data_type like 'char%' or data_type like 'text%
 
   desc "restore", "Restore a Discourse backup"
   def restore(filename)
-    filename = File.basename(filename)
     load_rails
     require "backup_restore"
     require "import/importer"