Remove logic that handles connecting to mongodb via unix domain socket

[bizob2828]

Is your feature request related to a problem? Please describe.

We have 2 test suites in test/versioned/mongodb/collection-common that require running mongod locally, otherwise they get skipped. They connect to mongo via domain socket and historically have proven to have different behaviors that need ironed out. It's quite a lot of work to get a local db setup. Also architectures these days make this use case highly unlikely, meaning hosting a Node.js application on the same server as mongodb. You'll typically have mongodb in a container and a Node.js app in another container, or connect to a Database as a Service(mongo atlas, etc).

Feature Description

Remove logic that handles connecting to a unix domain socket with mongodb.

[rr0214]

Effort: Medium - Large

[workato-integration]

https://issues.newrelic.com/browse/NEWRELIC-4458