[OE-core] meta-openembedded maintainer ship change.

[akuster808]

Hello all,

After much thought, I have decided to step away from being the
meta-openembedded maintainer, patch wrangler and builder.  Khem Raj has
kindly stepped up to continue these activities. Maintaining this was
consuming too much of my free time and I need to focus on other things
in the community.

Thanks for the opportunity to have served you.

Kind regards,

Armin