[PATCH] test/bpf: remove validation tests from CI

[Marat Khalili]

> The new tests for BPF validation are triggering a strange issue
> in GitHub Action: the last tests are killed by signal 7 SIGBUS.
> 
> The series fixing a lot of BPF issues was merged
> but the related test has to be removed from the fast tests suite
> which runs in some CI jobs.
> 
> Signed-off-by: Thomas Monjalon <thomas at monjalon.net>

I think I know the issue, it's tmpfs exhaustion. After some recent changes each
test consumes 25MB in the --file-prefix directory independently, easily driving
small VMs out of space. My ~30 new tests were the last drop for the CI.

I will try to prepare a fix today, of course please do everything that's
needed for the CI stability meanwhile.