Revert "Setting PLATFORM_VERSION(_CODENAME)? to O for master"

This reverts commit 1a737095c1d2e0224b45f4a4757d549f8142cd4a.

Bug: 28713307
Bug: 28767393
Change-Id: I355e7e6b9c785f7ca92d13eea7730449cfe80653
1 file changed