Revert "Configure CherryPy to process method body for DELETE"

This reverts commit f6a86eb1de54dd28c487d57f5e7f5b4a4f9b45eb.
Revert "Ensure test DELETE requests have a Content-Length set"

This reverts commit d6f46548e8860cc5457a75b3f0c8e882faadab8b.