Remove Erik and Nikhil from Productivity Reviewers (#485)
Remove Erik and Nikhil from Productivity Reviewers (#485)


knative-sandbox/eventing-prometheus,knative-sandbox/eventing-gitlab,knative-sandbox/eventing-ceph,knative-sandbox/eventing-camel,knative-sandbox/eventing-natss,knative-sandbox/eventing-awssqs,knative-sandbox/eventing-github,knative-sandbox/eventing-kafka,knative-sandbox/eventing-awssqs,knative-sandbox/eventing-kafka,knative-sandbox/eventing-gitlab,knative/eventing-contrib,knative-sandbox/eventing-prometheus,knative-sandbox/eventing-ceph,knative-sandbox/eventing-couchdb,knative-sandbox/eventing-couchdb,knative-sandbox/eventing-camel,knative/eventing-contrib,knative-sandbox/eventing-github,knative-sandbox/eventing-natss