feat(rde1edge): remove support for rde1edge

As support for RD-E1-Edge has been removed from Trusted Firmware, remove
all tests and references to the platform

Signed-off-by: Rohit Mathew <Rohit.Mathew@arm.com>
Change-Id: I46f948104d425dec0e7ad08874eec76c8ab181a8
1 file changed