After "JDK-8154011: Make TraceDeoptimization a diagnostic flag" some code is not included in the PRODUCT build.

Remove all the #ifndef PRODUCT guards around TraceDeoptimization checks and make sure to be consistent.

The DEOPT PACKING messages are controlled by PrintDeoptimizationDetails, but DEOPT UNPACKING is controlled by TraceDeoptimization. Therefore it would sense to make PrintDeoptimizationDetails a diagnostic flag as well.

See vfameArray.cpp:443
#ifndef PRODUCT
  if (PrintDeoptimizationDetails) {
    [...]
  } else if (TraceDeoptimization) {
    [...]
  }
#endif

Make sure that performance is not impacted by the change.