Remove incorrect test-skipping logic

[jyemin]

JAVA-5124

[rozza]

The overwritten minServerVersions will cause issues once the json files are synced.

It may be easier to add a check in setup(), then you can link to the ticket as well:

Psuedo-code:

// TODO - SEE: JAVA-5125
if (!isDiscoverableReplicaSet()) { 
   assumeTrue(isAtleastServerVersionFiveDotZero);
}

[rozza]

LGTM!