CONFIGS: Removes stated config due to SLIH issues

Removes the following config due to incompatibility issues caused by
optimisations in Minsizerel when running SLIH tests:
MUSCA_B1_GCC_2_RegBL2_RegS_RegNS_Minsizerel_BL2_MEDIUM

Change-Id: I30843f705fa78e026e3dae013276fc65f5cbe75f
Signed-off-by: Matthew Dalzell <matthew.dalzell@arm.com>
1 file changed