Revert "Add NATT keepalive resources and methods into IpSecService"

This reverts commit bdf70485711a1d749fe098ced978433ad3bd1f4d.

Reason for revert: Adds dependency between IpSecService and
                   ConnectivityService may lead to future deadlock
		   problems. Uses a simpler approach instead,
		   hence the solution is not needed.
		   See aosp/954040.

Change-Id: Ibff278a6eee666cd85dba81c2bed94d568679b02
1 file changed
tree: 57635fa1b0e900cb0230b7fbf5c2f33cabdb4fcc
  1. core/
  2. services/
  3. tests/