[DO NOT MERGE] Remove sl4a from packages/apps/Test/connectivity

-The project is moving to external/sl4a

Bug: 27106416
Change-Id: Ida9c1aac82c576a2ba8cc06cf0caf1848ef3f104
334 files changed
tree: ae70060a5dc3aa8b0da015046fef7b4d10a7c673
  1. sl4n/