cleanup - config_item_ip() and DEFAULT_IPV4_LOCAL_SUBNET

Test:
  git grep 'config_item_ip|DEFAULT_IPV4_LOCAL_SUBNET'
  comes up empty

Bug: 144730808
Test: atest clatd_test netd_integration_test
Signed-off-by: Maciej Żenczykowski <maze@google.com>
Change-Id: I0cb3fe5bae5f663d07a8cb63f2dd9ef9ca1a6dd8
2 files changed