WifiP2pServiceImpl: Use resources from context

The wifi resources are no longer in the system resource. So, use the
local context to retrieve resources.

Also, removed an unused method and some unused p2p resources.

Bug: 144443881
Test: Compiles
Change-Id: Ic581481e67125aba5ba1d9ff6f4af513acc9e75d
3 files changed
tree: 2eb0223f0f101864f766387e8b81844d28d2fb67
  1. service/
  2. PREUPLOAD.cfg