Doxygen: Removed obsolete config options.
Doxygen: Removed obsolete config options.

Absolute since 1.8.1:
- SHOW_DIRECTORIES
- HTML_ALIGN_MEMBERS

Absolute since 1.8.7:
- XML_SCHEMA
- XML_DTD

TelepathyIM/telepathy-qt,TelepathyQt/telepathy-qt,TelepathyQt/telepathy-qt,TelepathyIM/telepathy-qt,TelepathyIM/telepathy-qt,TelepathyQt/telepathy-qt,TelepathyIM/telepathy-qt,TelepathyQt/telepathy-qt,TelepathyIM/telepathy-qt