Build: Remove tf-m-tests dependency from the build

Revert TF-M dependency on tests repository. To include components for testing
inlcuding S side tests itself. a Path to TEST repo shall be explicitly
provided via TFM_TEST_REPO_PATH.

Signed-off-by: Anton Komlev <anton.komlev@arm.com>
Signed-off-by: Dávid Házi <david.hazi@arm.com>
Change-Id: I4161d6485ad77ff9682e905220039c32309adb93
17 files changed