Sigh - remove whitespace from end of suppressions text line

TBR=tomhudson@google.com
NOTRY=true
NOTREECHECKS=true

Review URL: https://codereview.chromium.org/754783003
diff --git a/expectations/gm/ignored-tests.txt b/expectations/gm/ignored-tests.txt
index 2890888..816de34 100644
--- a/expectations/gm/ignored-tests.txt
+++ b/expectations/gm/ignored-tests.txt
@@ -58,7 +58,7 @@
 verylargebitmap
 
 # robertphillips - https://codereview.chromium.org/748853002
-multipicturedraw_sierpinski_tiled 
+multipicturedraw_sierpinski_tiled
 multipicturedraw_rrectclip_tiled