Revert "Add method to read trunk stable flag"

This reverts commit b0f489021bae98b0b0874e80720bb73e1f36c478.

Reason for revert: Currently reading trunk stable flag from mainline module is not supported. So reverting the CL to avoid confusion.

Change-Id: I0db04f28f378399aa299b325312a6af7f45d4f67
2 files changed