spm: remove chosen node from SPMC manifests

The chosen node is no longer required as the SPMC implements
a specific boot flow which no longer requires this node.

Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
Change-Id: Ib566b602a7f83003a1b2d0ba5f6ebf4d8b7a9156
2 files changed