igt@gem-exec-nop@signal-all runs a single uninterrupted loop for 150
sec. This results in the test being one of the longest execution times
in CI runs.
According to mailing list discussions the test provides little of
value. Therefore drop it from the CI.
Signed-off-by: Ashutosh Dixit <email@example.com>
Reviewed-by: Chris Wilson <firstname.lastname@example.org>
Acked-by: Petri Latvala <email@example.com>