Clean up the flag parallel_lookup_release am: 581636ab am: 781461c7 am: 62c57731

Original change: https://android-review.googlesource.com/c/platform/packages/modules/DnsResolver/+/2535479



Change-Id: Iff04d0017151c2ed803b21b4d70481cd9e853460
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>