During batch de-registration of CM handles in NCMP, schema sets are being deleted individually. Addressing this will lead to increased performance.

See: org.onap.cps.ncmp.api.impl.NetworkCmProxyDataServiceImpl#batchDeleteCmHandlesFromDbAndModuleSyncMap

A/C:

• measurable performance improvement when de-registering 1000, 5000, and 10,000 CM handles.
• performance improvement documented in https://wiki.onap.org/display/DW/NCMP+De-Register+API+Performance