refactor(fvp): remove tests with no model

On FVP 11.26 we don't have models
 -fvp_base_aemv8a_gic600ae
 -fvp_base_aemv8a_aemv8a_aemv8a_aemv8a_ccn502

So remove this tests for now for migrating to 11.26 FVP

Signed-off-by: Govindraj Raja <govindraj.raja@arm.com>
Change-Id: I6931a980db2e40878d5d21114943c258173a2684
(cherry picked from commit df30c4d08e6f1bc305f80b481f2c1267c2c5b934)
8 files changed