Revert^2 "Nullability Annotations replacement"

This reverts commit 19d1d3d15d8ae797bb4a8aee9b03ccf2a1977b54.

Reason for revert: revert it because this is not the root cause.

bug: 316867690
Change-Id: I0f168dbb64044aa720202af7b1040afd4f028c9c
130 files changed