Omit "espn" from key_mobile_sites_smooth in RecreateSKPs bot

We already have a espn page set in Skia. Removing it from the chromium page
set does not lose us coverage.

NoTry: true
Bug: skia:7917
Change-Id: Ie5456ee7f8053ad904eb858eddfe564e3781249a
Reviewed-on: https://skia-review.googlesource.com/129303
Reviewed-by: Ravi Mistry <rmistry@google.com>
Commit-Queue: Ravi Mistry <rmistry@google.com>
diff --git a/tools/skp/webpages_playback.py b/tools/skp/webpages_playback.py
index c38b89b..54b2480 100644
--- a/tools/skp/webpages_playback.py
+++ b/tools/skp/webpages_playback.py
@@ -106,7 +106,7 @@
 
 PAGE_SETS_TO_EXCLUSIONS = {
     # See skbug.com/7348
-    'key_mobile_sites_smooth.py': '"(digg|worldjournal|twitter)"',
+    'key_mobile_sites_smooth.py': '"(digg|worldjournal|twitter|espn)"',
     # See skbug.com/7421
     'top_25_smooth.py': '"(mail\.google\.com)"',
 }