Dave Rodgman 8d91ceb19d Remove empty 3.0-migration-guide.d
This is now captured in 3.0-migration-guide.md

Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
2021-06-30 16:56:59 +01:00
..
2021-06-28 09:28:47 +01:00