MAINTAINERS: Remove unsupported statuses - Odd Fixes and Obsolete

The MAINTAINERS file was copied from Linux Kernel along with all its
statuses of maintainership.  However tools/genboardscfg.py accepts only
Maintained, Supported and Orphan.  Remove then the Odd Fixes and
Obsolete from MAINTAINERS file to avoid confusion.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>