tf-a-coverity: remove code to install CryptoCell library

TF-A project is removing support for CryptoCell IP, hence it no longer
needs any supporting testing libraries.

Signed-off-by: Sandrine Bailleux <sandrine.bailleux@arm.com>
Change-Id: I61eef8a4688b1881ba02ce2ffd3974c730dea42c
(cherry picked from commit 90c990c6df8feef43f6b54a7f2c40cdd89e39549)
2 files changed