Remove forkCount from surefire config (inadvertently added in a previous commit)
Remove forkCount from surefire config
(inadvertently added in a previous commit)

vespa-engine/vespa,vespa-engine/vespa,vespa-engine/vespa,vespa-engine/vespa,vespa-engine/vespa,vespa-engine/vespa,vespa-engine/vespa,vespa-engine/vespa,vespa-engine/vespa,vespa-engine/vespa