selftests/futex: Drop logging.h include from futex_numa

futex_numa doesn't really use logging.h helpers, it's only need two
includes from this file. So drop it and include the two missing
includes.

Signed-off-by: André Almeida <andrealmeid@igalia.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>