Remove extraneous opportunistic cache flush.

[eileenmcnaughton]

Overview

Removes a cache flush line that is not required as it has only just been flushed a few lines earlierr

Before

CRM_Contact_BAO_GroupContactCache::opportunisticCacheFlush();

After

poof

Technical Details

The opportunistic cache flush is already called by contact create and then again by each of the places
where the contact might be added to a group so this is just extraneous

Comments

@demeritcowboy this is what I mentioned on the dedupe one

[civibot]

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[colemanw]

Ok, I see where it's already happening as part of CRM_Contact_BAO_Contact_Utils::clearContactCaches().