[iOS] Remove the legacy string drawing code
https://bugs.webkit.org/show_bug.cgi?id=131088

Patch by Benjamin Poulain <bpoulain@apple.com> on 2014-04-02
Reviewed by Sam Weinig.

Source/WebKit: 

* WebKit.xcodeproj/project.pbxproj:

Source/WebKit/ios: 

* Misc/WebNSStringDrawing.h: Removed.
* Misc/WebNSStringDrawing.mm: Removed.
* Misc/WebUIKitSupport.h:

Source/WebKit/mac: 

* Configurations/WebKit.xcconfig:


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@166691 268f45cc-cd09-0410-ab3c-d52691b4dbfc