Remove inputSpeech.png
https://bugs.webkit.org/show_bug.cgi?id=135771

Patch by Benjamin Poulain <bpoulain@apple.com> on 2014-08-10
Reviewed by Andreas Kling.

* Resources/inputSpeech.png: Removed.
* WebCore.xcodeproj/project.pbxproj:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@172384 268f45cc-cd09-0410-ab3c-d52691b4dbfc