Revert "Automatically update timestamp for BUILD_DATE"

This reverts commit 534b824ef55bec1c0f342c3b5178fb42b8d89047.

Reason for revert: b/338516524

Bug: 338516524
Change-Id: I83878c7d12a804d58f8c83e7d117bc7f4962d48b
3 files changed