lib/device_map.py: fix blacklist: drop arch prefix (arm64 and x86)
lib/device_map.py: fix blacklist: drop arch prefix (arm64 and x86)

Change-Id: I3346375555b326f3435e79b0b180c826deec139d

kernelci/lava-ci-staging,kernelci/lava-ci-staging,kernelci/lava-ci-staging