[TASK] Enhance documentation for oplk_waitSyncEvent()

Change-Id: Id92ac3adf0068eb8079c4422aa513c63a16dc683
[TASK] Improve API documentation

Change-Id: I53aa0481b74008d5cfef82e77f60f213279c2258
[TASK] Remove VxWorks documentation

Remove documentation as the port of openPOWERLINK 2 to VxWorks is
not yet finished.

Change-Id: Ic5aa30b55277f2835bdab1ed570aeb272cb9691c