Revert "init_first_stage: Disable ThinLTO"

This reverts commit 4d6fa8ccaf37f5ba5b501036cd187a184f119438.

Reason for revert: b/295944813 is fixed

Bug: 304290959
Change-Id: I2d6f5216800d6ee26b25623898836dc216c8be18
Test: adb-remount-test.sh
1 file changed