indexed_insert_where.js performs finds with $where, which are not very performant. This can cause failures when running on the concurrency_sharded_causal_consistency_and_balancer suite: This suite does secondary reads. In case of find on a secondary that runs longer than orphanCleanupDelaySecs, the range deleter could kick in before the query on the secondary has finished and remove the documents the query expected to find. (SERVER-31934 has some more context about this issue on that suite).

Since indexed_insert_where.js is know to run 'finds' that could take longer than the default orphanCleanupDelaySecs in our tests (1 second), we should not run this test on the concurrency_sharded_causal_consistency_and_balancer suite.