Revert "Add useSystemProvidedLauncherForSecondary config"

This reverts commit 4626518fcd65b8b0698e45c1faca4d3e77d0cef3.

Reason for revert: Broke RootActivityContainerTests.testStartHomeOnAllDisplays

Bug: 131112301
Change-Id: I87b574ff4d289d159aeea4312dc0ad0c64b414ac
4 files changed