https://bugs.webkit.org/show_bug.cgi?id=122221

Reviewed by Antti Koivisto.

I'm keeping the PLATFORM(QT) defines in Platform.h for now so we can assess if there are any
Qt only features that we can remove later.

* WTF.pri: Removed.
* WTF.pro: Removed.
* wtf/Assertions.cpp:
* wtf/CurrentTime.cpp:
* wtf/DisallowCType.h:
* wtf/FastMalloc.cpp:
* wtf/FeatureDefines.h:
* wtf/qt/MainThreadQt.cpp: Removed.
* wtf/qt/StringQt.cpp: Removed.
* wtf/text/AtomicString.h:
* wtf/text/StringImpl.cpp:
(WTF::StringImpl::~StringImpl):
* wtf/text/StringImpl.h:
* wtf/text/WTFString.cpp:
(WTF::String::format):
* wtf/text/WTFString.h:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@156775 268f45cc-cd09-0410-ab3c-d52691b4dbfc