Remove Java from the arena language options (#5158)
Remove Java from the arena language options (#5158)


codecombat/codecombat,javatlacati/codecombat,javatlacati/codecombat,javatlacati/codecombat,jeremiahyan/codecombat,codecombat/codecombat,codecombat/codecombat,jeremiahyan/codecombat,javatlacati/codecombat,codecombat/codecombat,codecombat/codecombat,javatlacati/codecombat,jeremiahyan/codecombat,jeremiahyan/codecombat