Eliminates redundant table rows at API level

This change fixes the bug at the API
layer where the policy engine returns multiple
copies of the same result.  It is a temporary
fix until we correct the underlying policy engine.

Related-bug: 1344466
Change-Id: Ia969e1052f5bc66b407b6626aad998281c59b0b0
Merge "Eliminates redundant table rows at API level"