Revert "Update sl4a according to WifiScannerManager changes. https://googleplex-android-review.git.corp.google.com/#/c/576209"

This reverts commit a56a30e1c7f593f60ad281ee1cddd8ab778b17df.

Change-Id: Id0b4b1de67b57476b031905ec29cd8ffcda7b201
2 files changed