Use SystemApi framework parcelables directly

Remove StaticIpConfigurationParcelable and ApfCapabilitiesParcelable and
use StaticIpConfiguration and ApfCapabilities directly.
These two classes are SystemApi and defined in framework.jar, so no
stability guarantee is needed: the parceled and unparceled class will
always be the framework.jar version.

Bug: 126477266
Fixes: 126477266
Test: atest FrameworksNetTests NetworkStackTests
Test: flashed, booted, WiFi and captive portal works.
Change-Id: Iaf80ae23e003752cc6d2300700021931923b6533