remove TrafficController::dump am: d70a33061e am: ffb1ccd1a7

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

Change-Id: I62abf5c2dd44166e176928a5cf4e25ffb6d07c6f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>