[API] Removes private APIs

autoscaling.delete_autoscaling_policy.rb
autoscaling.get_autoscaling_capacity.rb
autoscaling.get_autoscaling_policy.rb
autoscaling.put_autoscaling_policy.rb
capabilities.rb
connector.secret_delete.rb
connector.secret_get.rb
connector.secret_post.rb
connector.secret_put.rb
fleet.delete_secret.rb
fleet.get_secret.rb
fleet.post_secret.rb
machine_learning.validate.rb
machine_learning.validate_detector.rb
monitoring.bulk.rb
profiling.flamegraph.rb
profiling.stacktraces.rb
profiling.status.rb
profiling.topn_functions.rb
security.activate_user_profile.rb
security.disable_user_profile.rb
security.enable_user_profile.rb
security.get_user_profile.rb
security.has_privileges_user_profile.rb
security.suggest_user_profiles.rb
security.update_user_profile_data.rb
shutdown.delete_node.rb
shutdown.get_node.rb
shutdown.put_node.rb