[NaCl SDK] Remove .pyc file from the SDK tarball.

BUG=241926
R=noelallen@google.com

Review URL: https://codereview.chromium.org/24530003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@226273 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 226273