fvp: remove morello runconfig from CI

Morello model binaries are not available with newer FVP release 11.28
So remove reference and usage with older FVP's.

Change-Id: I595f8d28215eff897f951094919e0a1fc464bc56
Signed-off-by: Govindraj Raja <govindraj.raja@arm.com>
8 files changed