cleanup(scp): removing scp v2.8.0 mentions

All the models are using scp v2.9.0 prebuilt version - removing
reference to v2.8.0 version

Signed-off-by: Maksims Svecovs <maksims.svecovs@arm.com>
Change-Id: I00a556e555462642937e42565e365cf12ee03a86
1 file changed