p2p: remove legacy DHCP codes

DHCP is taken over by Tethering mode fully.
Removing dead code to avoid accessing hidden API.

Bug: 144018493
Test: CtsVerifier - WiFi Direct
Change-Id: If17f360328f12724796dfd7c01bdacf5925cc247
1 file changed
tree: 208e9a786766f4e53aaa6fbe579833aebeaa14d8
  1. apex/
  2. service/
  3. PREUPLOAD.cfg