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: Rohit Mathew <rohit.mathew@arm.com>
Change-Id: I46e5b76538068c16f37430b6cc6979bb2c0be82c
8 files changed