Remove the executable property from flags in the speex directory
Done with: third_party/speex$ svn propdel -R svn:executable .
Example fail: http://buildbot.jail.google.com/buildbot/chromium/builders/Chromium%20Linux/builds/14915

BUG=none
TEST=builder check perms will pass once more

Review URL: http://codereview.chromium.org/3171014

git-svn-id: http://src.chromium.org/svn/trunk/deps/third_party/speex@56388 4ff67af0-8c30-449e-8e8b-ad334ec8d88c