remove TrafficController::dump am: d70a33061e

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/2743933

Change-Id: Id24ca3412602348e250b9331a86a80a6730c0f23
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>