test: Drop obsolete hack in check-sosreport
test: Drop obsolete hack in check-sosreport

`docker stats` does not hang any more in all our supported OSes, so drop
the hack. The test fails otherwise in rhel-x, as docker is not installed
there.

martinpitt/cockpit,deryni/cockpit,moraleslazaro/cockpit,cockpituous/cockpit,mvollmer/cockpit,cockpituous/cockpit,garrett/cockpit,garrett/cockpit,garrett/cockpit,andreasn/cockpit,deryni/cockpit,cockpit-project/cockpit,cockpituous/cockpit,mvollmer/cockpit,deryni/cockpit,deryni/cockpit,andreasn/cockpit,andreasn/cockpit,deryni/cockpit,martinpitt/cockpit,garrett/cockpit,moraleslazaro/cockpit,martinpitt/cockpit,moraleslazaro/cockpit,andreasn/cockpit,moraleslazaro/cockpit,moraleslazaro/cockpit,deryni/cockpit,cockpit-project/cockpit,garrett/cockpit,andreasn/cockpit,cockpituous/cockpit,cockpit-project/cockpit,cockpit-project/cockpit,mvollmer/cockpit,mvollmer/cockpit,cockpit-project/cockpit,martinpitt/cockpit,cockpituous/cockpit,moraleslazaro/cockpit,moraleslazaro/cockpit,cockpituous/cockpit,deryni/cockpit,andreasn/cockpit,andreasn/cockpit,mvollmer/cockpit,martinpitt/cockpit