support/testing: remove TestATFMarvell

There were only two users of Marvell ATF: SolidRun MacchiatoBin board
and ClearFrog GT 8k board. After mv-ddr-marvell package update both
boards switched to upstream ATF. Remove tests for now unused
Marvell ATF.

Signed-off-by: Sergey Matyukevich <geomatsi@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
1 file changed