Deletes warning on no graph outputs, since we don't output graphs anymore.

bench/bench_graph_svg.py

Index: bench/bench_graph_svg.py
===================================================================
--- bench/bench_graph_svg.py	(revision 10689)
+++ bench/bench_graph_svg.py	(working copy)
@@ -500,9 +500,6 @@
         usage()
         sys.exit(2)
 
-    if not output_path:

[scroggo, 2013/08/13 14:58:20]

Should we take it a step further and remove output_path entirely? Or is that
functionality is still useful?

[benchen, 2013/08/13 15:00:38]

We feel it won't be useful, but not 100% sure yet.
On 2013/08/13 14:58:20, scroggo wrote:

-        print 'Warning: No output path provided. No graphs will be written.'
-
     if time_of_interest:
         time_to_ignore = None