This is the follow on to CR: 6491584

make minor code changes - add functions that are #defined to nothing or defined as empty -
to bring the layout code to zero or small delta from the ICU code

Background: Previously, we had to manually make some changes to remove irrelevent things from ICU code before dropping it into the JDK. This change will leave the irrelevent things in, but define them to have no impact on the final code.