refactor(cryptocell): remove support for CryptoCell testing

TF-A project is removing support for CryptoCell IP, hence it no longer
needs any supporting test configs or test scripts related to CryptoCell.

Signed-off-by: Sandrine Bailleux <sandrine.bailleux@arm.com>
Change-Id: Ic12cae139982e17cd4735fef9b6da1dd995b56aa
(cherry picked from commit 4e699bf81566b9cd724ca1faadd9be318bcf8559)
7 files changed