Remove deprecated long_description metadata
Remove deprecated long_description metadata

Signed-off-by: Tim Smith <764ef62106582a09ed09dfa0b6bff7c05fd7d1e4@chef.io>

chef-brigade/mongodb-cookbook,chef-brigade/mongodb-cookbook,sous-chefs/mongodb,chef-brigade/mongodb-cookbook,sous-chefs/mongodb,sous-chefs/mongodb