Revert "Add wire packing test for CreateWindow"

This reverts commit 7eda0d037951e653aeefa9b7c437df0d9b2fefb6.

This needs to be thought out a little bit better. I still think it's a good
idea to test the wire format (the example was generated and hand checked from
xpyb), but apparently more hard coding needs to exist to account for
inconsistencies between environments.