[NaCl SDK] Remove erroneous comma from bundle description.

This was causing the description to be stored as a tuple, which was serialized
to JSON as an array, which makes naclsdk list display the description as
[u'Chrome ... bundle, revision ...']

BUG=none
R=noelallen@chromium.org
NOTRY=true


Review URL: https://chromiumcodereview.appspot.com/10830223

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@150866 0039d316-1c4b-4281-b951-d872f2087c98

native_client_sdk/src/build_tools/build_sdk.py

@@ -576,8 +576,7 @@ def GetManifestBundle(pepper_ver, revision, tarfile, archive_url):
   bundle.revision = int(revision)
   bundle.repath = 'pepper_' + pepper_ver
   bundle.version = int(pepper_ver)
-  bundle.description = 'Chrome %s bundle, revision %s' % (
-          pepper_ver, revision),
+  bundle.description = 'Chrome %s bundle, revision %s' % (pepper_ver, revision)
   bundle.stability = 'dev'
   bundle.recommended = 'no'
   bundle.archives = [archive]