Image::initPlatformData is always an empty function so we can remove it

Image::initPlatformData is always an empty function so we can remove it
https://bugs.webkit.org/show_bug.cgi?id=86297

Reviewed by Dan Bernstein.

* platform/graphics/BitmapImage.h: Removed declaration of initPlatformData.

* platform/graphics/BitmapImage.cpp:
(WebCore::BitmapImage::BitmapImage): Removed call to initPlatformData.
* platform/graphics/cairo/BitmapImageCairo.cpp:
(WebCore::BitmapImage::BitmapImage): Ditto.
* platform/graphics/cg/ImageCG.cpp:
(WebCore::BitmapImage::BitmapImage): Ditto.
* platform/graphics/chromium/ImageChromiumMac.mm: Removed empty
initPlatformData function.
* platform/graphics/efl/ImageEfl.cpp: Ditto.
* platform/graphics/gtk/ImageGtk.cpp:
* platform/graphics/mac/ImageMac.mm:
* platform/graphics/openvg/ImageOpenVG.cpp:
(WebCore::BitmapImage::BitmapImage): Removed call to initPlatformData.
Removed empty initPlatformData function.
* platform/graphics/qt/ImageQt.cpp:
(WebCore::BitmapImage::BitmapImage): Removed call to initPlatformData.
Removed empty initPlatformData function.
* platform/graphics/skia/ImageSkia.cpp: Removed empty initPlatformData function.
* platform/graphics/win/ImageWin.cpp: Ditto.
* platform/graphics/wx/ImageWx.cpp: Ditto.
(WebCore::BitmapImage::BitmapImage): Removed call to initPlatformData.

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@116907 268f45cc-cd09-0410-ab3c-d52691b4dbfc