Removed m_identity:{get,set}_props which were unused and not working.
Removed m_identity:{get,set}_props which were unused and not working.

Fixes #249

erlanger-ru/erlanger-ru.meta,erlanger-ru/erlanger-ru.meta,erlanger-ru/erlanger-ru.meta,erlanger-ru/erlanger-ru.meta,erlanger-ru/erlanger-ru.meta