WifiConfigManager: Remove redundant code

Remove some redundant code in enableNetwork and move some the network
status updation from state machine to ConfigManager.

BUG: 28317135
Change-Id: I375af87bd971352d3066a150e046571f00de44fd
TEST: Compiles & unit-test passes
2 files changed
tree: 0f1fc443252d999a7d82b7e98514e72d662d3efc
  1. service/
  2. tests/