[docs] Update Makefile for images removal.
 - Also, drop the lines.gif background from doxygen, this URL was wrong on the
   llvm.org server anyway.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155208 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/docs/doxygen.css b/docs/doxygen.css
index 80c6cad..83951f6 100644
--- a/docs/doxygen.css
+++ b/docs/doxygen.css
@@ -327,7 +327,7 @@
 }
 .title {
   font-size: 25pt; 
-  color: black; background: url("../img/lines.gif");
+  color: black;
   font-weight: bold;
   border-width: 1px;
   border-style: solid none solid none;