feat(neoverse_rd): deprecate and remove RD-V1 platform variants

deprecate and remove support for RD-V1 and RD-V1-MC platform variants.

Signed-off-by: Jerry Wang <Jerry.Wang4@arm.com>
Change-Id: I59003ae3a6b3ea0f603f3282c31efc37d312e1fd
4 files changed