Remove Config Groups Only Containing GNUARM Compiler

ARMCLANG is now available in Open CI.
Default filter groups have already been updated
to include ARMCLANG compiler.
Config groups that only contain GNUARM are no more needed.
They could be removed.

Change-Id: Ia0f943e78748a3207f7d9e7d334e78f2ff4415b7
Signed-off-by: Xinyu Zhang <xinyu.zhang@arm.com>
1 file changed