Revert "Strip off anything that can come after the xml content, also in the update method."

This reverts commit add0ee34029a38ad1034cf917f4459a0cc1d8a41.

See https://github.com/gboudreau/XBMC-Movies-Metadata-Agent-for-Plex/commit/add0ee34029a38ad1034cf917f4459a0cc1d8a41#commitcomment-2996833 to understand why this was reversed.