- removed gb_sets_add_element/1 call from performance_SUITE (-10s execution time)
- removed gb_sets_add_element/1 call from performance_SUITE (-10s execution time)

git-svn-id: d89f83fc72fb49d2f5b112dfb73cea192610bdff@970 71766da9-9752-0410-ab17-bfafa751c56a

fredrikelinder/scalaris,fredrikelinder/scalaris,fredrikelinder/scalaris,fredrikelinder/scalaris,fredrikelinder/scalaris,fredrikelinder/scalaris