O3-2597: Remove irrelevant mappings causing import errors

Fix for O3-2597: Removed the 4 mappings to CIEL 164844 ("HIV status of source person") as this was causing the error messages for this collection, and I can find no reason these mappings are needed in this specific collection.
Jira issue: https://openmrs.atlassian.net/browse/O3-2597