Remove unused svg

css/images/arrow.svg

@@ -1,4 +0,0 @@
-<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="24px" height="12px" viewBox="0 0 24 12" zoomAndPan="disable">
-	<line x1="0" y1="0" x2="12" y2="12" style="stroke:#ccc;stroke-width:1.5" />
-	<line x1="24" y1="0" x2="12" y2="12" style="stroke:#ccc;stroke-width:1.5" />
-</svg>