Remove now unnecessary math check in cleanupElement(). Move line-height property to the CSS where it belongs

git-svn-id: http://svg-edit.googlecode.com/svn/trunk@1369 eee81c28-f429-11dd-99c0-75d572ba1ddd

editor/svg-editor.css

@@ -29,6 +29,7 @@
 }
 
 #svg_editor #svgcanvas {
+	line-height: normal;
 	display: inline-block;
 	background-color: #A0A0A0;
 	text-align: center;