chore(measured boot): remove unused DTC flags

We no longer need to pass special flags to the device tree compiler
for measured boot. These are a left over from the days where we used
to pass BL2 measurement to BL2 image via TB_FW configuration file.

This should have been removed as part of commit eab78e9ba4e36da27
("refactor(measured_boot): remove passing of BL2 hash via device
tree") but was missed at the time.

Change-Id: Iced7e60af7ca660c342c0fc3a33b51865d67f04d
Signed-off-by: Sandrine Bailleux <sandrine.bailleux@arm.com>
1 file changed