Remove some stray uses of OwnPtr and PassOwnPtr in WTF (outside of the template defin...

Remove some stray uses of OwnPtr and PassOwnPtr in WTF (outside of the template definitions and traits)
https://bugs.webkit.org/show_bug.cgi?id=143944

Reviewed by Andreas Kling.

Source/WebCore:

* editing/ios/DictationCommandIOS.h: Added now-needed include of PassOwnPtr.h.

Source/WTF:

* wtf/FilePrintStream.h: Removed unneeded include.
* wtf/HashTable.h: Fixed class template name in comment.
* wtf/HashTraits.h: Removed unneeded forward declaration.
* wtf/ListHashSet.h: Removed unneeded includes.
* wtf/ThreadingWin.cpp: Removed unneeded includes.
(WTF::wtfThreadEntryPoint): Changed code to use unique_ptr.
(WTF::createThreadInternal): Changed code to use make_unique and release.
* wtf/efl/RunLoopEfl.cpp: Removed unneeded includes.

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@183063 268f45cc-cd09-0410-ab3c-d52691b4dbfc