Remove unused member.

git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@2891 dfc29bdd-3216-0410-991c-e03cc46cb475

source/Irrlicht/COpenGLTexture.h

@@ -124,7 +124,6 @@ protected:
 	core::dimension2d<u32> ImageSize;
 	core::dimension2d<u32> TextureSize;
 	ECOLOR_FORMAT ColorFormat;
-	s32 Pitch;
 	COpenGLDriver* Driver;
 	IImage* Image;