Fix for 3615411, the linesAppended optimization was old and broken, and it's easier...

	Fix for 3615411, the linesAppended optimization was old and broken, and it's easier with the new code fixes
	made by me, kocienda and harrison to just remove it.

        Reviewed by mjs

        * khtml/rendering/bidi.cpp:
        (khtml::RenderBlock::layoutInlineChildren):
        * khtml/rendering/render_block.cpp:
        (khtml:::RenderFlow):
        * khtml/rendering/render_block.h:
        * khtml/rendering/render_flow.cpp:
        (RenderFlow::dirtyLinesFromChangedChild):

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@8141 268f45cc-cd09-0410-ab3c-d52691b4dbfc