[automerger skipped] Remove DNS64 detection code from clatd. am: c29e1785c1 -s ours

am skip reason: Change-Id I892f364d6cbfe76277686387e35c04d3d6eb5ecc with SHA-1 27da0ad045 is in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/external/android-clat/+/11704600

Change-Id: Ia0d984ddaf8579726daab71848cc5927d7569b2b