RUBY-1999 switch back to limit of -1 to indicate the expectation of a single batch (#1860)
RUBY-1999 switch back to limit of -1 to indicate the expectation of a single batch (#1860)

Co-authored-by: Oleg Pudeyev <20b70f0af00562e63758b9ee42012ecc96c58590@bsdpower.com>
mongodb/mongo-ruby-driver,mongodb/mongo-ruby-driver,mongodb/mongo-ruby-driver