RTCD defs: Remove empty specialize statements once and for all.

A similar cleanup happened before, but the empty statements have since
reappeared. I added a check in 'specialize' subroutine to die whenever
such an empty specialize call is found, so that config+make would fail.

Change-Id: I300ca0f0b077c0aeca8096d6460d8fb1c364d9b9
4 files changed