Remove insecure ssl options from MongoDBIO

[damccorm]

The option MongoDBIO.withIgnoreSSLCertificate  and withSSLInvalidHostNameAllowedslInvalidHostNameAllowed() are insecure by design. We should not encourage users to be able to use them so better to remove these options.

Imported from Jira BEAM-9564. Original Jira may contain additional context.
Reported by: iemejia.