remove _inUnitTest flag

- it was used to suppress stderr message during unit test
remove print functions
fix
Issue 9099 - core.atomic.atomicLoad() cannot handle non-POD structs
Added TypeInfo override methods to object.di.
Merge pull request #372 from klickverbot/object-di-add-typeinfo-overrides

Added missing TypeInfo methods declarations to object.di.
Merge pull request #367 from dawgfoto/Fixup5375

remove _inUnitTest flag