Remove ET_SYNC_MSC boilerplate from generator and runtime
The ET_SYNC_MSC API is not really used anymore, and it contributes lots of noise in the runtime and generated code. Via discussion it was decided that we could remove this feature from the the C generator and the C runtime.
- See ET_SYNC_MSC_LOGGER_ACTIVATE in runtime.c common/debugging/etMSCLogger.h
- Check Cpp/Java variants?